CN110491330A - A kind of gamma adjusting method, device and display device - Google Patents
A kind of gamma adjusting method, device and display device Download PDFInfo
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- CN110491330A CN110491330A CN201910917616.8A CN201910917616A CN110491330A CN 110491330 A CN110491330 A CN 110491330A CN 201910917616 A CN201910917616 A CN 201910917616A CN 110491330 A CN110491330 A CN 110491330A
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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Abstract
The embodiment of the invention discloses a kind of gamma adjusting method, device and display devices, wherein gamma adjusting method includes choosing reference curve by the corresponding relationship curve based on preset data voltage and grayscale, and choosing maximum illuminated state grayscale and corresponding point under minimum illuminated state grayscale on reference curve is the 1st group of datum mark；At least one line segment is obtained using adjacent reference point in kth group datum mark as endpoint, is determined with the maximum point of data voltage difference under same gray level on each line segment on reference curve, obtained point and kth group datum mark constitute+1 group datum mark of kth；Tying up a little for gamma adjusting is determined according to obtained datum mark, and then can find and reasonably tie up a position sum number amount, to reduce colour cast, is improved gamma and is adjusted efficiency.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of gamma adjusting methods, device and display device.
Background technique
With the development of display technology, the image displaying quality of display panel is required also higher and higher.
Before display panel factory, need to carry out gamma adjusting to display panel, to guarantee the display panel under each grayscale
Good display effect.The effect quality that gamma is adjusted is closely related with tying up a number and tie up a position, tie up a number number
The efficiency of gamma adjusting is had an effect on, therefore, ties up image displaying quality of the reasonable set to display panel of a number and position
It is most important that efficiency is adjusted with gamma.
Summary of the invention
The present invention provides a kind of gamma adjusting method, device and display device, to realize that reasonable setting gamma adjusted ties up
Point and ties up a position at number, guarantees the image displaying quality of display panel and improve gamma to adjust efficiency to realize simultaneously.
In a first aspect, the embodiment of the invention provides a kind of gamma adjusting method, for carrying out gamma tune to display device
Section, gamma adjusting method include:
Reference curve is chosen based on preset data voltage and the corresponding relationship curve of grayscale, and is chosen on reference curve most
Corresponding point is the 1st group of datum mark under big illuminated state grayscale and minimum illuminated state grayscale；
Obtain at least one line segment using adjacent reference point in kth group datum mark as endpoint, determine on reference curve with each item
The maximum point of data voltage difference under same gray level on line segment, obtained point and kth group datum mark constitute+1 group datum mark of kth；
Wherein, k is the integer more than or equal to 1；
Tying up a little for gamma adjusting is determined according to obtained datum mark.
Optionally, display device includes at least red sub-pixel, green sub-pixels and blue subpixels, preset data electricity
The corresponding relationship curve of pressure and grayscale includes at least the first curve, the second curve and third curve, wherein the first curve is red
The data voltage of sub-pixel and the corresponding relationship curve of grayscale, the second curve are the data voltage of green sub-pixels and pair of grayscale
Relation curve is answered, third curve is the data voltage of blue subpixels and the corresponding relationship curve of grayscale；
Reference curve is chosen based on preset data voltage and the corresponding relationship curve of grayscale, comprising:
A curve is chosen in the first curve, the second curve and third curve as reference curve.
Optionally, choose the first curve, in the second curve and third curve a curve as reference curve, comprising:
It chooses in the first curve, the second curve and third curve, the corresponding data voltage of minimum illuminated state grayscale and most light
The curve of the maximum absolute value of the corresponding data voltage difference of state grayscale is as reference curve.
Optionally, tying up a little for gamma adjusting is determined according to obtained datum mark, comprising:
A position is tied up by what the corresponding grayscale of n-th group datum mark and dark-state grayscale were determined as gamma adjusting, and by n group base
Number on schedule adds one to be determined as tying up a number；Wherein, in n-th group datum mark and the later datum mark of n-th group, every group of datum mark
In at least exist and meet adjacent two datum marks of the following conditions: on the line segment of adjacent two datum marks composition and on reference curve, In
The maximum difference of data voltage is less than first threshold voltage under same gray level in low ash order range；
Preferably, in n-th group datum mark and the later datum mark of n-th group, on each line segment of adjacent two datum marks composition
On the reference curve, the maximum difference of data voltage is less than first threshold electricity under the same gray level in low ash order range
Pressure；
Preferably, low ash order range is more than or equal to 1 grayscale and to be less than or equal to 64 grayscale.
Optionally, tying up a little for gamma adjusting is determined according to obtained datum mark, comprising: by the 5th group of corresponding ash of datum mark
Rank and dark-state grayscale be determined as gamma adjusting tie up a position；The number tied up a little is 18.
Optionally, after being tied up a little determine that gamma adjusts according to obtained datum mark, further includes:
Grayscale test is carried out at tying up, is determined and is tied up place's red sub-pixel, green sub-pixels and blue subpixels correspondence
Data voltage；
It is corresponding with grayscale according to red sub-pixel, green sub-pixels and the corresponding data voltage of blue subpixels at tying up
Relation curve.
Optionally, grayscale test is carried out at tying up, is determined and is tied up place's red sub-pixel, green sub-pixels and blue sub- picture
The corresponding data voltage of element, comprising:
According to preset target white light brightness and target white light coloration, to red sub-pixel, green sub-pixels and blue
The corresponding data voltage of pixel is adjusted, until red sub-pixel, green sub-pixels and the issued light mixing of blue subpixels
Made of practical white brightness and target white light luminance difference be less than or equal to the first luminance threshold and red sub-pixel, green
Practical white light coloration that the light that sub-pixels and blue subpixels are issued mixes and target white light chroma difference be less than or
Equal to the first Chroma threshold.
Optionally, it before choosing reference curve based on the corresponding relationship curve of preset data voltage and grayscale, also wraps
It includes:
Typical sample display device is chosen, grayscale test is carried out respectively under all grayscale to typical sample display device,
To obtain data voltage and blue of the red sub-pixel in the data voltage, green sub-pixels under all grayscale under all grayscale
Data voltage of the sub-pixel under all grayscale, and according to respectively according to red sub-pixel under all grayscale data voltage,
Green sub-pixels respectively obtain first in the data voltage of data voltage, blue subpixels under all grayscale under all grayscale
Curve, the second curve and third curve, and using the first curve, the second curve and third curve as preset data voltage and ash
The corresponding relationship curve of rank.
Second aspect, the embodiment of the invention also provides a kind of gamma regulating devices, comprising: datum mark chooses module, base
Reference curve is chosen in preset data voltage and the corresponding relationship curve of grayscale, and chooses maximum illuminated state grayscale on reference curve
It is the 1st group of datum mark with point corresponding under minimum illuminated state grayscale；
Datum mark determining module, for obtaining at least one line segment using adjacent reference point in kth group datum mark as endpoint, really
Determine on reference curve with the maximum point of data voltage difference, obtained point and kth group datum mark under same gray level on each line segment
Constitute+1 group datum mark of kth；Wherein, k is the integer more than or equal to 1；
A determining module is tied up, for determining tying up a little for gamma adjusting according to obtained datum mark.
The third aspect is stored in display device according to first party the embodiment of the invention also provides a kind of display device
What the gamma adjusting method that face provides obtained ties up a little.
The embodiment of the invention provides a kind of gamma adjusting method, device and display devices, by choosing on reference curve
Corresponding point is the 1st group of datum mark under maximum illuminated state grayscale and minimum illuminated state grayscale；It is with adjacent reference point in kth group datum mark
Endpoint obtains at least one line segment, determines maximum with data voltage difference under same gray level on each line segment on reference curve
Point, obtained point and kth group datum mark constitute+1 group datum mark of kth；Tying up a little for gamma adjusting is determined according to obtained datum mark,
Most datum marks can be made to fall in low ash order range, so that being fallen according to the overwhelming majority that ties up that datum mark determines
In low ash order range, so that carrying out the grayscale obtained after gamma adjusting and number according to a data voltage corresponding at tying up a little and tie up
According to voltage relationship close to reference curve trend so that the relationship of grayscale and data voltage that gamma obtains after adjusting
It is more matched with object brightness and target colorimetric, so that gamma regulating effect is preferable, and then reduces colour cast.And can set by
The less corresponding relationship tied up points and measure accurate grayscale and data voltage is conducive to improve gamma adjusting efficiency.
Can gamma adjusting method through this embodiment, can find and reasonably tie up a position and (tie up an overwhelming majority and tie up point
In in low ash order range) and quantity, to reduce colour cast, raising gamma adjusts efficiency.
Detailed description of the invention
Fig. 1 is a kind of flow chart of gamma adjusting method provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram that the present invention implements the reference curve provided and part datum mark；
Fig. 3 is the corresponding relationship curve of preset data voltage provided in an embodiment of the present invention and grayscale；
Fig. 4 is the flow chart of another gamma adjusting method provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another gamma adjusting method provided in an embodiment of the present invention；
Fig. 6 is the corresponding relationship curve of ideal data voltage provided in an embodiment of the present invention and grayscale and actually obtains
The corresponding relationship curve graph of data voltage and grayscale；
Fig. 7 is the flow chart of another gamma adjusting method provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of gamma regulating device provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
As described in the background art, the effect quality that gamma is adjusted is closely related with tying up a number and tie up a position, ties up
Point number number have an effect on gamma adjusting efficiency therefore tie up the reasonable set of a number and position to display panel
It is most important that image displaying quality (being embodied as colour cast degree) and gamma adjust efficiency.Wherein, it is to adjust ash that gamma, which is adjusted,
Rank matches object brightness and target colorimetric with the relationship of data voltage.Through inventor the study found that when carrying out gamma adjusting, lead to
Chang Shouxian carries out the adjusting of data voltage to tying up point (grayscale can a little be referred to by wherein tying up), and then obtains object brightness at corresponding tie up
With the data voltage of target colorimetric；Then each ash tied up between a little is obtained according to the data voltage progress linear difference for tying up place
The corresponding data voltage of rank.And corresponds to and be all up the data voltage of corresponding object brightness and target colorimetric in each grayscale
In the corresponding relationship of grayscale, usually in certain grey-scale range, including non-linear relation.And according to the data voltage at tying up
Carrying out linear difference calculating can only obtain linear corresponding relation, i.e. straightway, and therefore, the number that setting is tied up a little is more, by line
The straightway that property difference obtains is more, and the broken line that a plurality of straightway splices can correspond to certain grayscale closer to curve
Non-linear relation in range.Therefore, it ties up that the setting of quantity is more, respectively ties up point according to what a data voltage at tying up was calculated
Between the corresponding data voltage of grayscale also can preferably match object brightness and target colorimetric so that the colour cast of display panel compared with
It is small.But gamma adjust tie up points setting it is more, gamma adjust time it is longer, gamma adjust efficiency it is lower.Therefore,
Finding tie up a number and position that suitable gamma is adjusted becomes urgent problem to be solved.
Based on the above issues, a kind of gamma adjusting method provided in an embodiment of the present invention, for carrying out gal to display device
Horse is adjusted, and Fig. 1 is a kind of flow chart of gamma adjusting method provided in an embodiment of the present invention, and Fig. 2 is that the present invention implements to provide
The schematic diagram of reference curve and part datum mark, wherein abscissa gray indicates grayscale in Fig. 2, and ordinate Vdata indicates data
Voltage, with reference to Fig. 1 and Fig. 2, which includes:
Step 110 chooses reference curve 1 based on preset data voltage and the corresponding relationship curve of grayscale, and chooses ginseng
Examining maximum illuminated state grayscale and corresponding point under minimum illuminated state grayscale on curve 1 is the 1st group of datum mark.
Wherein, preset data voltage and the corresponding relationship curve of grayscale can be a curve, be also possible to a plurality of song
Line.When the corresponding relationship curve of preset data voltage and grayscale is a curve, using a curve as reference curve
1, when the corresponding relationship curve of preset data voltage and grayscale is a plurality of curve, a wherein curve can be chosen and be used as reference
Curve 1.Wherein, grayscale can be the display grayscale for the sub-pixel for including in display device.Optionally, preset data voltage with
The corresponding relationship curve of grayscale can be the corresponding relationship curve of ideal data voltage and grayscale, ideal data voltage with
On the corresponding relationship curve of grayscale, the corresponding data voltage of each grayscale is to can make sub-pixel reach mesh corresponding with grayscale
Mark brightness and target colorimetric.But because of reasons such as manufacture craft differences, the corresponding ideal data voltage of each display device with
The corresponding relationship curve of grayscale may be different, but the corresponding relationship of each display device corresponding ideal data voltage and grayscale
The general trend of curve is consistent, wherein general trend can be the increase with grayscale, slope of a curve variation；Or
General trend can be the variation of the size of data voltage as grayscale increases.Therefore, optionally, preset data voltage with
The corresponding relationship curve of grayscale can be the corresponding ideal data voltage of a certain display device in same batch display device with
The corresponding relationship curve of grayscale.Also, for different display devices, the corresponding data voltage of dark-state grayscale is usually certain
, therefore it is optional, it does not include the corresponding point of dark-state grayscale in preset data voltage and the corresponding relationship curve of grayscale.
Wherein, maximum illuminated state grayscale can refer to corresponding grayscale when sub-pixel has maximum brightness, and minimum illuminated state grayscale can
Corresponding grayscale when referring to that sub-pixel has minimum brightness (not including dark-state).Illustratively, when the ash that sub-pixel can be shown
When order range is 0-255 grayscale, maximum illuminated state grayscale is 255 grayscale, and 0 grayscale corresponds to dark-state grayscale (sub-pixel does not shine), then
Minimum illuminated state grayscale is 1 grayscale, i.e. for sub-pixel when luminous, having corresponding grayscale when minimum light emission luminance is minimum illuminated state ash
Rank.On reference curve, the corresponding point S2 of maximum illuminated state grayscale point S1 corresponding with minimum illuminated state grayscale is respectively reference curve
An endpoint.
Step 120 obtains at least one line segment using adjacent reference point in kth group datum mark as endpoint, determines reference curve
The maximum point of data voltage difference under same gray level, obtained point and kth group datum mark constitute+1 group of kth on upper and each line segment
Datum mark；Wherein, k is the integer more than or equal to 1.
Wherein, for any datum mark, adjacent reference point refers to the grayscale pair for being greater than the datum mark on reference curve
In the grey-scale range answered, it is less than the benchmark on the smallest datum mark of corresponding with datum mark grayscale difference and reference curve
In the corresponding grey-scale range of grayscale of point, the smallest datum mark of grayscale difference corresponding with the datum mark.Therefore reference curve is removed
Endpoint outside, each datum mark include two adjacent reference points.Because the 1st group of datum mark is endpoint, so only one adjacent base
On schedule, two datum marks S1 and S2 and in the 1st group of datum mark respective adjacent reference point each other.
It illustratively, is end with adjacent reference point in the 1st group of datum mark in k=1 after the 1st group of datum mark determines
Point, i.e. S1 and S2 obtain a line segment, by calculate reference curve on on the line segment under each grayscale data voltage difference
Value, determine on reference curve with the maximum point A1 of data voltage difference on the line segment, wherein the difference of data voltage can be disregarded
It is positive and negative, that is, determine the point on reference curve with the maximum absolute value of data voltage difference on the line segment, and obtained data are electric
The point of the maximum absolute value of pressure difference and the 1st group of datum mark collectively form the 2nd group of datum mark, then the 2nd group of datum mark includes three,
That is S1, S2 and A1.In k=2, using adjacent two datum mark in the 2nd group of datum mark as endpoint, two lines section is obtained, respectively
S1A1, A1S2, calculate separately on reference curve with the maximum point B1 and B2 of difference in two lines section, and by newly obtain two differences
It is worth maximum point B1 and B2 and the 2nd group of datum mark (S1, S2 and A1) and collectively forms the 3rd group of datum mark (S1, S2, A1, B1, B2),
Therefore the number of the 3rd group of datum mark is 5.It is successively carried out according to above step, when available kth=3,4,5,6 ...
Corresponding datum mark, it is 2 that kth group, which ties up number a little,(k-1)+ 1.
Step 130 determines tying up a little for gamma adjusting according to obtained datum mark.
After the 1st group of datum mark to+1 group datum mark of kth, tying up for gamma adjusting can be determined according to obtained datum mark
Point.Specifically, m group datum mark can be determined as to tying up a little for gamma adjusting, wherein m≤k+1.Because ideal data voltage with
The relationship of grayscale is usually not necessarily all linear relationship, with reference to Fig. 2, in reference curve, generally includes non-linear relation section (in Fig. 2
On the left of dotted line L1) and linear relationship section (in Fig. 2 on the right side of dotted line L1), when sub-pixel includes organic luminescent device, due to organic hair
The characteristic of optical device, non-linear relation section usually correspond to low ash order range, and linear relationship section corresponds to high ash order range, such as
1 grayscale to 64 grayscale is low ash order range in figure, and 65 to 255 grayscale are high ash order range.In low ash order range, grayscale and number
It is curved line relation according to the relationship of voltage, and as the increase of grayscale, slope of a curve absolute value are gradually reduced, is embodied in curve
When on specific form, the curve for showing as corresponding non-linear relation end is recessed form.Gamma provided in this embodiment is adjusted
In method, adjacent reference point is straightway as the line segment that endpoint obtains, because the non-linear relation section inner curve of reference curve is oblique
Rate absolute value is gradually reduced, and is in recessed form, so that the datum mark overwhelming majority falls in the grayscale corresponding to non-linear relation section
In range, i.e., in low ash order range.It is determined according to obtained datum mark when tying up, datum mark can be determined as tying up a little, then absolutely
Most of tie up a little falls in low ash order range, then when carrying out gamma adjusting, obtains the object brightness corresponding to the grayscale at tying up
After the data voltage of target colorimetric, in low ash order range, the broken line of the available a plurality of end to end formation of straightway, because
Every curve can be regarded as to be formed by connecting without several straightways ending, and therefore, most datum marks are located at low ash rank
In range, the straightway item number obtained after linear difference in low ash order range can be made more, a plurality of straightway splicing
Made of broken line close to curve so that according to obtaining tying up the relationship for carrying out the grayscale and data voltage that obtain after gamma adjusting
Close to the trend of reference curve, and correspond to the ideal data voltage and grayscale relation curve and reference of each display device
Curvilinear trend is identical, therefore, according to obtain tying up the relationship for carrying out the grayscale and data voltage that obtain after gamma adjusting close to
The ideal data voltage and grayscale relation curve of display device, so that according to obtaining obtaining after tying up a progress gamma adjusting
Grayscale more matched with the relationship of data voltage with object brightness and target colorimetric so that gamma regulating effect is preferable,
And then reduce colour cast.
Also, because in the gamma adjusting method of the present embodiment, the obtained datum mark overwhelming majority falls in non-linear relation section
In corresponding low ash order range, therefore even if setting is less to tie up quantity, illustratively, the 5th group of datum mark (17) is set
Or the 6th group datum mark (33) are to tie up a little, can also carry out linear difference by tying up a little corresponding data voltage in low ash order range
Obtained a plurality of straightway ending connects composition and the more consistent broken line of reference curve trend, and then can tie up points by less
The corresponding relationship for measuring accurate grayscale and data voltage is conducive to improve gamma adjusting efficiency.
Gamma adjusting method provided in an embodiment of the present invention, it is bright by choosing maximum illuminated state grayscale and minimum on reference curve
Corresponding point is the 1st group of datum mark under state grayscale；At least one line is obtained using adjacent reference point in kth group datum mark as endpoint
Section, determine on reference curve with the maximum point of data voltage difference, obtained point and kth group base under same gray level on each line segment
+ 1 group datum mark of kth is constituted on schedule；Tying up a little for gamma adjusting is determined according to obtained datum mark, can make most benchmark
Point is fallen in low ash order range, so that fallen in low ash order range according to the overwhelming majority that ties up that datum mark determines, so that
According to a data voltage corresponding at tying up a little and tie up carry out the relationship of the grayscale and data voltage that are obtained after gamma adjusting close to
The trend of reference curve, so that the relationship and object brightness and aim colour of grayscale and data voltage that gamma obtains after adjusting
Degree more matches, so that gamma regulating effect is preferable, and then reduces colour cast.And it can set and be measured by less points of tying up
The corresponding relationship of accurate grayscale and data voltage is conducive to improve gamma adjusting efficiency.It can be through this embodiment
Gamma adjusting method, can find and reasonably tie up a position and (tie up an overwhelming majority to tie up a little in the low ash order range) sum number
Amount improves gamma and adjusts efficiency to reduce colour cast.
Fig. 3 is the corresponding relationship curve of preset data voltage provided in an embodiment of the present invention and grayscale, wherein horizontal in Fig. 3
Coordinate gray indicates grayscale, and ordinate Vdata indicates data voltage, based on the above technical solution, optional with reference to Fig. 3
, display device includes at least red sub-pixel, green sub-pixels and blue subpixels, pair of preset data voltage and grayscale
Relation curve is answered to include at least the first curve 11, the second curve 12 and third curve 13, wherein the first curve 11 is red sub- picture
The data voltage of element and the corresponding relationship curve of grayscale, the second curve 12 are that the data voltage of green sub-pixels is corresponding with grayscale
Relation curve, third curve 13 are the data voltage of blue subpixels and the corresponding relationship curve of grayscale；
Fig. 4 is the flow chart of another gamma adjusting method provided in an embodiment of the present invention, with reference to Fig. 3 and Fig. 4, the gamma
Adjusting method includes:
Step 210, choose the first curve 11, in the second curve 12 and third curve 13 curve as reference curve,
And choosing maximum illuminated state grayscale and corresponding point under minimum illuminated state grayscale on reference curve is the 1st group of datum mark；
Step 220 obtains at least one line segment using adjacent reference point in kth group datum mark as endpoint, determines reference curve
The maximum point of data voltage difference under same gray level, obtained point and kth group datum mark constitute+1 group of kth on upper and each line segment
Datum mark；Wherein, k is the integer more than or equal to 1；
Step 230 determines tying up a little for gamma adjusting according to obtained datum mark.
Specifically, typically at least including red sub-pixel, the sub- picture of green in display device for the display for realizing multicolour
Element and blue subpixels realize the display of different colours by the mixing of the issued light of three sub-pixels.Because red sub-pixel,
The differences such as the luminescent material of green sub-pixels and blue subpixels, sub-pixel size or arrangement, the data electricity of red sub-pixel
Pressure and the corresponding relationship curve (the first curve 11) of grayscale, the corresponding relationship curve of the data voltage of green sub-pixels and grayscale
The data voltage of (the second curve 12), blue subpixels is usually different from the corresponding relationship curve (third curve 13) of grayscale
, that is, when realizing the display of same gray level, need for data provided by red sub-pixel, green sub-pixels and blue subpixels
Voltage swing may be different.But the general trend of the first curve 11, the second curve 12 and third curve 13 is consistent,
In, general trend can be the increase with grayscale, slope of a curve variation；Or general trend can be as grayscale increases
Greatly, the variation of the size of data voltage.Because the first curve 11, the second curve 12 are consistent with the overall trend of third curve 13
, therefore, using any bar curve in the first curve 11, the second curve 12 and third curve 13 as reference curve, Ji Kebao
Demonstrate,prove obtain tie up and a little largely fall in the corresponding grey-scale range of non-linear relation section, i.e., in low ash order range, so that root
According to obtaining tying up the relationship for carrying out the grayscale and data voltage that obtain after gamma adjusting and an object brightness and target colorimetric more
Match, so that gamma regulating effect is preferable, and then reduces colour cast.
Based on the above technical solution, optionally, it chooses in the first curve 11, the second curve 12 and third curve 13
One curve is as reference curve, comprising:
Choose in the first curve 11, the second curve 12 and third curve 13, the corresponding data voltage of minimum illuminated state grayscale and
The curve of the maximum absolute value of the corresponding data voltage difference of maximum illuminated state grayscale is as reference curve.
With reference to Fig. 3, the first curve 11, the second curve 12 and third curve 13 respectively include non-linear relation (dotted line in Fig. 3
On the left of L2) section and linear relationship section (in Fig. 3 on the left of dotted line L2), in linear relationship section, the first curve 11, the second curve 12 and the
Three curves 13 are close to straight line respectively, and in linear relationship section, the first curve 11, the second curve 12 and third curve 13
Slope is essentially identical, and in linear relationship section, the data voltage variable quantity of the first curve 11, the second curve 12 and third curve 13
It is unanimous on the whole, therefore, the corresponding data voltage of minimum illuminated state grayscale data voltage difference corresponding with maximum illuminated state grayscale it is exhausted
To being worth in maximum curve, data voltage changes maximum in the data voltage of non-linear relation section, for preset number shown in Fig. 3
According in voltage and the corresponding relationship curve of grayscale, i.e., maximum illuminated state grayscale from minimum illuminated state grayscale to non-linear relation section, number
According to voltage degradation maximum, therefore by the corresponding data voltage of minimum illuminated state grayscale and the corresponding data voltage of maximum illuminated state grayscale
The curve of the maximum absolute value of difference can make reference curve and adjacent reference point is the line that endpoint obtains as reference curve
The maximum point of data voltage difference is more fallen in the corresponding grey-scale range of non-linear section under same gray level in section, i.e. low ash rank
In range, and tying up a little is part datum mark, and specially m group datum mark, m≤k+1, m value can be set according to actual needs
It is fixed, it is a little largely fallen in low ash order range so that tying up, basis can be made to obtain obtaining after tying up a progress gamma adjusting
Grayscale more matched with the relationship of data voltage with object brightness and target colorimetric so that gamma regulating effect is preferable,
And then reduce colour cast.And it can set by the less corresponding relationship tied up points and measure accurate grayscale and data voltage,
Be conducive to improve gamma adjusting efficiency.
Fig. 5 is the flow chart of another gamma adjusting method provided in an embodiment of the present invention, and with reference to Fig. 5, which is adjusted
Method includes:
Step 310 chooses reference curve based on preset data voltage and the corresponding relationship curve of grayscale, and chooses reference
Maximum illuminated state grayscale and corresponding point under minimum illuminated state grayscale are the 1st group of datum mark on curve.
Step 320 obtains at least one line segment using adjacent reference point in kth group datum mark as endpoint, determines reference curve
The maximum point of data voltage difference under same gray level, obtained point and kth group datum mark constitute+1 group of kth on upper and each line segment
Datum mark；Wherein, k is the integer more than or equal to 1.
Step 330, the corresponding grayscale of n-th group datum mark and dark-state grayscale are determined as gamma adjusting tie up a position, with
And one is added to be determined as tying up a number number of n group datum mark；Wherein, in n-th group datum mark and the later datum mark of n-th group,
At least exist in every group of datum mark and meet adjacent two datum marks of the following conditions: on the line segment of adjacent two datum marks composition with reference
On curve, the maximum difference of data voltage is less than first threshold voltage under the same gray level in low ash order range；
Optionally, in n-th group datum mark and the later datum mark of n-th group, on each line segment of adjacent two datum marks composition
On the reference curve, the maximum difference of data voltage is less than first threshold electricity under the same gray level in low ash order range
Pressure；
Optionally, low ash order range is for more than or equal to 1 grayscale and less than or equal to 100 grayscale；
Optionally, low ash order range is more than or equal to 1 grayscale and to be less than or equal to 64 grayscale.
Specifically, k is the integer more than or equal to 1, i.e. k=1,2,3 ... ... n, n+1 ..., i.e. n are in all values of k
An occurrence.
With reference to Fig. 2, because on reference curve, in low ash order range, the relationship of data voltage and grayscale is non-linear relation,
Specially curved line relation is determined by obtaining at least one line segment by endpoint of adjacent reference point in kth group datum mark with reference to bent
With the maximum point of data voltage difference under same gray level on each line segment on line, obtained point and kth group datum mark constitute kth+1
Group datum mark, so that k value is bigger, the line segment and reference song obtained using adjacent reference point in kth group datum mark as the endpoint of endpoint
The corresponding data voltage difference of point that difference is maximum on line (disregard positive and negative, can make the absolute value of difference) is smaller, n-th group benchmark
In point and the later datum mark of n-th group, at least there is adjacent two datum mark for meeting the following conditions in every group of datum mark: adjacent two
With on reference curve on the line segment of datum mark composition, the maximum difference of data voltage is small under the same gray level in low ash order range
In first threshold voltage；I.e. n-th group datum mark be meet on the line segment that at least there is adjacent two datum mark composition with reference curve
On, the maximum difference of data voltage is less than first group of base of first threshold voltage condition under the same gray level in low ash order range
On schedule, it and then can guarantee the negligible amounts bound, improve gamma and adjust efficiency, wherein first threshold voltage can be according to color
Inclined allowance is configured.
In n-th group datum mark and the later datum mark of n-th group, on each line segment of adjacent two datum marks composition with reference song
On line, the maximum difference of data voltage is less than first threshold voltage, i.e. n-th group benchmark under the same gray level in low ash order range
Point is the number under the same gray level in low ash order range on each line segment for meet adjacent two datum marks composition and on reference curve
It is less than first group of datum mark of first threshold voltage according to the maximum difference of voltage, and then can guarantees the negligible amounts of binding, mentions
High gamma adjusts efficiency, wherein first threshold voltage can be configured according to colour cast allowance.Also, n-th group datum mark and
In the later all datum marks of n-th group, on each line segment of adjacent two datum marks composition and on reference curve, in low ash order range
The maximum difference of data voltage is less than first threshold voltage under interior same gray level, so that by the corresponding grayscale of n-th group datum mark
It is determined as tying up a position, it is ensured that in low ash order range, the relationship of the data voltage and grayscale that are adjusted by gamma
It is all more matched with object brightness and target colorimetric, guarantees that colour cast is controlled in the range of permission, improved in low ash order range
Display effect.Also, because not including the corresponding point of dark-state grayscale on reference curve, therefore can be by dark-state grayscale and n-th group
Datum mark is set as tying up a little for gamma adjusting, correspondingly, adding one to be determined as tying up a number number of n group datum mark.
In one embodiment, tying up a little for gamma adjusting is determined according to the obtained datum mark, comprising:
By the 5th group of corresponding grayscale of datum mark and dark-state grayscale be determined as gamma adjusting tie up a position；Tie up number a little
It is 18.
Specifically, according to that above embodiment of the present invention it is found that the 5th group of number tied up a little is 2 when not considering dark-state grayscale(5-1)+ 1=17, dark-state grayscale is a little generally included because tying up, therefore, the 5th group of corresponding grayscale of datum mark and dark-state grayscale are determined
For gamma adjust when tying up position, a corresponding number of tying up is 18.
A position is tied up by what the 5th group of corresponding grayscale of datum mark and dark-state grayscale were determined as gamma adjusting, is tied up a little a
Number, which is set as 18, can both guarantee that gamma regulating effect was preferable, reduce colour cast, and be conducive to improve gamma adjusting efficiency.
Fig. 6 is the corresponding relationship curve of ideal data voltage provided in an embodiment of the present invention and grayscale and actually obtains
The corresponding relationship curve graph of data voltage and grayscale, wherein abscissa gray indicates grayscale in Fig. 6, and ordinate Vdata indicates number
According to voltage.With reference to Fig. 6, the data voltage that actual experiment shown in Fig. 6 obtains is corresponding with the corresponding relationship curve graph of grayscale by the 5th group
The corresponding grayscale of datum mark and dark-state grayscale be determined as gamma adjusting tie up a position, tie up a number be 18 the case where, according to Fig. 6
It is found that by the 5th group of corresponding grayscale of datum mark and dark-state grayscale be determined as gamma adjusting tie up a position, tie up a number be 18 when
What actual experiment obtained corresponds to red son corresponding to the data voltage of red sub-pixel and the corresponding relationship curve of grayscale and 21
The ideal data voltage of pixel and the corresponding relationship curve 11 of grayscale essentially coincide, and what actual experiment obtained corresponds to the sub- picture of green
The data voltage of element and the corresponding relationship curve of grayscale and 22 correspond to the ideal data voltage of green sub-pixels and pair of grayscale
Answer relation curve 12 to essentially coincide, actual experiment obtain corresponding to the data voltage of blue subpixels and the corresponding relationship of grayscale
The ideal data voltage and the corresponding relationship curve 13 of grayscale that curve corresponds to blue subpixels with 23 essentially coincide, this it is practical must
To data voltage and the corresponding relationship curve of grayscale and the corresponding relationship curve of ideal data voltage and grayscale correspond respectively to
Same display device, therefore, by by the 5th group of corresponding grayscale of datum mark and dark-state grayscale be determined as gamma adjusting tie up point
It sets, tying up a number and being set as 18 can both guarantee to carry out the grayscale obtained after gamma adjusting and data voltage according to obtaining tying up
More matched with object brightness and target colorimetric, so that gamma regulating effect is preferable, and then reduce colour cast, and can set by
The less corresponding relationship tied up points and measure accurate grayscale and data voltage is conducive to improve gamma adjusting efficiency.
A position can be tied up with reasonable by the way that less quantity of tying up is arranged, that is to say, that tie up an overwhelming majority and be located at low ash rank model
In enclosing, to reduce colour cast, improves gamma and adjust efficiency.
Fig. 7 is the flow chart of another gamma adjusting method provided in an embodiment of the present invention, and with reference to Fig. 7, which is adjusted
Method includes:
Step 410 chooses reference curve based on preset data voltage and the corresponding relationship curve of grayscale, and chooses reference
Maximum illuminated state grayscale and corresponding point under minimum illuminated state grayscale are the 1st group of datum mark on curve；
Step 420 obtains at least one line segment using adjacent reference point in kth group datum mark as endpoint, determines reference curve
The maximum point of data voltage difference under same gray level, obtained point and kth group datum mark constitute+1 group of kth on upper and each line segment
Datum mark；Wherein, k is the integer more than or equal to 1；
Step 430 determines tying up a little for gamma adjusting according to obtained datum mark；
Step 440 carries out grayscale test at tying up, determines that tie up place's red sub-pixel, green sub-pixels and blue sub
The corresponding data voltage of pixel；
Specifically, place's progress grayscale test is being tied up after tying up a little determine that gamma adjusts according to obtained datum mark, it is logical
Cross grayscale test determine tie up at red sub-pixel, green sub-pixels and the corresponding data voltage of blue subpixels, wherein tying up a little
Place's red sub-pixel, green sub-pixels and the corresponding data voltage of blue subpixels specifically can be tie up at data voltage reach
The data voltage of the grayscale corresponding object brightness and target colorimetric.
Step 450, according to tying up place's red sub-pixel, green sub-pixels and the corresponding data voltage calculating of blue subpixels
The corresponding relationship curve of data voltage and grayscale.
Specifically, the gamma adjusting method of the present embodiment, can apply and carry out gal to a batch of display device
Horse is adjusted.Specifically, after determining reference curve according to a display device in a collection of display device in step 410, specifically
It can be to a progress grayscale test in a collection of display device, and as often as possible measure a display device in different grayscale
Under data voltage, such as can be data voltage of one display device of measurement under all grayscale, and obtain reference curve,
When then being tied up a little according to the reference curve trend and datum mark determination, then tested other display devices, directly tying up a little
Place carries out grayscale test, obtains tying up place red sub-pixel, green sub-pixels and the corresponding data voltage of blue subpixels, utilization
The mode of linear difference is respectively tied up the corresponding data voltage of grayscale between a little, and then obtains other display devices in all ashes
The corresponding relationship of rank and data voltage.I.e. for other display devices, it is not necessary to all carry out grayscale test under all grayscale, in turn
The efficiency of gamma adjusting can be improved.
Based on the above technical solution, optionally, grayscale test is carried out at tying up, is determined and is tied up the sub- picture of place's red
Element, green sub-pixels and the corresponding data voltage of blue subpixels, comprising:
According to preset target white light brightness and target white light coloration, to red sub-pixel, green sub-pixels and blue
The corresponding data voltage of pixel is adjusted, until red sub-pixel, green sub-pixels and the issued light mixing of blue subpixels
Made of practical white brightness and target white light luminance difference be less than or equal to the first luminance threshold and red sub-pixel, green
Practical white light coloration that the light that sub-pixels and blue subpixels are issued mixes and target white light chroma difference be less than or
Equal to the first Chroma threshold.
Optionally, grayscale test is carried out to display device using optical sensor, optical sensor can obtain display in real time
The display brightness and display coloration of device.Display device generally includes driving chip and display panel, and display panel includes red
Sub-pixel, green sub-pixels or blue subpixels, driving chip can provide data voltage for the sub-pixel in display panel, carry out
When grayscale is tested, driving chip can provide respectively data voltage, optics for red sub-pixel, green sub-pixels or blue subpixels
Sensor the brightness that shows of real-time detection and coloration and can be transmitted to driving chip.Wherein, it can be stored with and be tied up a little in driving chip
Locate the corresponding object brightness of grayscale and target colorimetric.Specifically, when carrying out grayscale test, it can be by adjusting driving chip to red
The data voltage that sub-pixel, green sub-pixels and blue subpixels export respectively come adjust red sub-pixel, green sub-pixels and
Practical white brightness that the issued light of blue subpixels mixes and practical white light coloration can be stored in driving chip and respectively tie up
Target white light brightness and target white light coloration at point, by the optics optical flame detector real-time detection practical white brightness and practical white light
Coloration, and it is transmitted to driving chip, driving chip can be according to the practical white brightness and target white light color that optical sensor transmits
Degree carry out to red sub-pixel, green sub-pixels and blue subpixels output data voltage adjusting, until red sub-pixel,
Practical white brightness that green sub-pixels and the issued light of blue subpixels mix and target white light luminance difference be less than or
The reality mixed equal to the light that the first luminance threshold and red sub-pixel, green sub-pixels and blue subpixels are issued
Border white light coloration and target white light chroma difference are less than or equal to the first Chroma threshold, and then guarantee a data voltage at respectively tying up
Can guarantee to reach or approach this tie up at the corresponding object brightness of grayscale and target colorimetric, guarantee that colour cast is smaller.Wherein, first
Luminance threshold and the first Chroma threshold can be set according to actual needs.
Based on the above technical solution, optionally, bent in the corresponding relationship based on preset data voltage and grayscale
Line selection takes before reference curve, further includes:
Typical sample display device is chosen, grayscale test is carried out respectively under all grayscale to typical sample display device,
To obtain data voltage and blue of the red sub-pixel in the data voltage, green sub-pixels under all grayscale under all grayscale
Data voltage of the sub-pixel under all grayscale, and according to respectively according to red sub-pixel under all grayscale data voltage,
Green sub-pixels respectively obtain first in the data voltage of data voltage, blue subpixels under all grayscale under all grayscale
Curve, the second curve and third curve, and using the first curve, the second curve and third curve as preset data voltage and ash
The corresponding relationship curve of rank.
Wherein, typical sample display device can be any display device in a collection of display device.It is aobvious to typical sample
Showing device carries out grayscale test respectively under all grayscale, to obtain under all grayscale red sub-pixel under all grayscale
Data voltage, green sub-pixels in the data voltage of data voltage and blue subpixels under all grayscale under all grayscale,
And according to respectively according to red sub-pixel in the data electricity of data voltage, green sub-pixels under all grayscale under all grayscale
Pressure, data voltage of the blue subpixels under all grayscale respectively obtain the first curve, the second curve and third curve, and by the
The corresponding relationship curve of one curve, the second curve and third curve as preset data voltage and grayscale, can to preset
Data voltage and the corresponding relationship curve of grayscale typical sample display device sub-pixel can be made all may be used under all grayscale
To reach object brightness and target colorimetric, so that preset data voltage and the corresponding relationship curve of grayscale can be well
Luminescent device characteristic in sub-pixel is reacted, such as organic luminescent device, preset data voltage is corresponding with grayscale
Relation curve slope variation in low ash order range is big, and curve is in recessed form, in high ash order range, preset data electricity
It presses almost the same with the corresponding relationship slope of curve of grayscale；So that according to the corresponding relationship of preset data voltage and grayscale
Curve choose reference curve can react luminescent device characteristic in sub-pixel well, and then find suitably tie up quantity and
Tie up a position.
The embodiment of the invention also provides a kind of gamma regulating device, Fig. 8 is a kind of gamma provided in an embodiment of the present invention
The structural schematic diagram of regulating device, with reference to Fig. 8, which includes:
Datum mark chooses module 510, chooses reference curve based on preset data voltage and the corresponding relationship curve of grayscale,
And choosing maximum illuminated state grayscale and corresponding point under minimum illuminated state grayscale on reference curve is the 1st group of datum mark；
Datum mark determining module 520, for obtaining at least one line using adjacent reference point in kth group datum mark as endpoint
Section, determine on reference curve with the maximum point of data voltage difference, obtained point and kth group base under same gray level on each line segment
+ 1 group datum mark of kth is constituted on schedule；Wherein, k is the integer more than or equal to 1；
A determining module 530 is tied up, for determining tying up a little for gamma adjusting according to obtained datum mark.
Gamma regulating device provided in an embodiment of the present invention is chosen most light on module selection reference curve by datum mark
Corresponding point is the 1st group of datum mark under state grayscale and minimum illuminated state grayscale；Datum mark determining module is with adjacent in kth group datum mark
Datum mark be endpoint obtain at least one line segment, determine on reference curve with data voltage difference under same gray level on each line segment
Maximum, obtained point and kth group datum mark constitutes+1 group datum mark of kth；A determining module is tied up according to obtained datum mark
It determines tying up a little for gamma adjusting, most datum marks can be made to fall in low ash order range, so that according to datum mark
The determining overwhelming majority that ties up is fallen in low ash order range, so that carrying out gamma according to a data voltage corresponding at tying up a little and tie up
The relationship of the grayscale and data voltage that are obtained after adjusting close to reference curve trend so that gamma obtains after adjusting
Grayscale is more matched with the relationship of data voltage with object brightness and target colorimetric, so that gamma regulating effect is preferable, into
And reduce colour cast.And it can set by the less corresponding relationship tied up points and measure accurate grayscale and data voltage, have
Efficiency is adjusted conducive to gamma is improved.Can gamma adjusting method through this embodiment, can find and reasonably tie up a position
(tie up an overwhelming majority and tie up and be a little located in low ash order range) and quantity improve gamma and adjust efficiency to reduce colour cast.
The embodiment of the invention also provides a kind of display device, Fig. 9 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram, what the gamma adjusting method that the above-mentioned any embodiment of the storage present invention provides in display device 100 obtained ties up
Point, and the beneficial effect that the gamma adjusting method that there is the above-mentioned any embodiment of the present invention to provide has.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of gamma adjusting method, which is characterized in that for carrying out gamma adjusting, the gamma adjusting method to display device
Include:
Reference curve is chosen based on preset data voltage and the corresponding relationship curve of grayscale, and is chosen on the reference curve most
Corresponding point is the 1st group of datum mark under big illuminated state grayscale and minimum illuminated state grayscale；
Obtain at least one line segment using adjacent reference point in kth group datum mark as endpoint, determine on the reference curve with each item
The maximum point of data voltage difference under same gray level on the line segment, obtained point and kth group datum mark constitute+1 group benchmark of kth
Point；Wherein, k is the integer more than or equal to 1；
Tying up a little for gamma adjusting is determined according to the obtained datum mark.
2. gamma adjusting method according to claim 1, which is characterized in that the display device includes at least red sub- picture
The corresponding relationship curve of element, green sub-pixels and blue subpixels, the preset data voltage and grayscale includes at least first
Curve, the second curve and third curve, wherein first curve, which is that the data voltage of red sub-pixel is corresponding with grayscale, to close
It is curve, second curve is the data voltage of green sub-pixels and the corresponding relationship curve of grayscale, and the third curve is
The data voltage of blue subpixels and the corresponding relationship curve of grayscale；
It is described that reference curve is chosen based on preset data voltage and the corresponding relationship curve of grayscale, comprising:
A curve is chosen in first curve, the second curve and third curve as reference curve.
3. gamma adjusting method according to claim 2, which is characterized in that described to choose first curve, the second song
A curve is as reference curve in line and third curve, comprising:
It chooses in first curve, second curve and the third curve, the corresponding data voltage of minimum illuminated state grayscale
The curve of the maximum absolute value of data voltage difference corresponding with maximum illuminated state grayscale is as the reference curve.
4. gamma adjusting method according to claim 1, which is characterized in that the datum mark that the basis obtains determines
What gamma was adjusted ties up a little, comprising:
A position is tied up by what the corresponding grayscale of datum mark described in n-th group and dark-state grayscale were determined as gamma adjusting, and by n group base
Number on schedule adds one to be determined as tying up a number；Wherein, in n-th group datum mark and the later datum mark of n-th group, every group of datum mark
In at least exist and meet adjacent two datum marks of the following conditions: with described with reference to bent on the line segment of the adjacent two datum marks composition
On line, the maximum difference of data voltage is less than first threshold voltage under the same gray level in low ash order range；
Preferably, in n-th group datum mark and the later datum mark of n-th group, on each line segment of adjacent two datum marks composition with institute
It states on reference curve, the maximum difference of data voltage is less than first threshold voltage under the same gray level in low ash order range；
Preferably, the low ash order range is more than or equal to 1 grayscale and to be less than or equal to 64 grayscale.
5. gamma adjusting method according to claim 1, which is characterized in that the datum mark that the basis obtains determines
What gamma was adjusted ties up a little, comprising:
By the corresponding grayscale of datum mark and dark-state grayscale described in the 5th group be determined as gamma adjusting tie up a position；It is described to tie up a little
Number is 18.
6. gamma adjusting method according to claim 2, which is characterized in that true in the datum mark that the basis obtains
Determine gamma adjusting tie up a little after, further includes:
Grayscale test is carried out at described tie up, determine described in tie up at the red sub-pixel, the green sub-pixels and institute
State the corresponding data voltage of blue subpixels；
According to the red sub-pixel, the green sub-pixels and the corresponding data voltage of the blue subpixels at described tie up
With the corresponding relationship curve of grayscale.
7. gamma adjusting method according to claim 6, which is characterized in that carry out grayscale test at described tie up, really
It is fixed described tie up at the red sub-pixel, the green sub-pixels and the corresponding data voltage of the blue subpixels, comprising:
According to preset target white light brightness and target white light coloration, to the red sub-pixel, green sub-pixels and blue
The corresponding data voltage of pixel is adjusted, until the red sub-pixel, green sub-pixels and the issued light of blue subpixels
The practical white brightness and target white light luminance difference mixed is less than or equal to the first luminance threshold and the red son
The practical white light coloration and target white light chroma difference that the light that pixel, green sub-pixels and blue subpixels are issued mixes
Less than or equal to the first Chroma threshold.
8. gamma adjusting method according to claim 2, which is characterized in that based on preset data voltage and grayscale
Corresponding relationship curve is chosen before reference curve, further includes:
Typical sample display device is chosen, grayscale test is carried out respectively under all grayscale to the typical sample display device,
With obtain the red sub-pixel in data voltage of the data voltage, green sub-pixels under all grayscale under all grayscale and
Data voltage of the blue subpixels under all grayscale, and according to the number according to red sub-pixel under all grayscale respectively
According to voltage, green sub-pixels in the data voltage difference of data voltage, blue subpixels under all grayscale under all grayscale
First curve, the second curve and third curve are obtained, and using first curve, the second curve and third curve as institute
State the corresponding relationship curve of preset data voltage and grayscale.
9. a kind of gamma regulating device, comprising: datum mark chooses module, the corresponding relationship based on preset data voltage and grayscale
Curve chooses reference curve, and choosing on the reference curve corresponding point under maximum illuminated state grayscale and minimum illuminated state grayscale is the
1 group of datum mark；
Datum mark determining module determines institute for obtaining at least one line segment using adjacent reference point in kth group datum mark as endpoint
State on reference curve with the maximum point of data voltage difference, obtained point and kth group base under same gray level on line segment described in each item
+ 1 group datum mark of kth is constituted on schedule；Wherein, k is the integer more than or equal to 1；
A determining module is tied up, for determining tying up a little for gamma adjusting according to the obtained datum mark.
10. a kind of display device, which is characterized in that be stored in the display device described in -8 any one according to claim 1
Tying up a little of obtaining of gamma adjusting method.
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Cited By (9)
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| CN111696470A (en) * | 2020-07-10 | 2020-09-22 | 京东方科技集团股份有限公司 | Display module and display device |
| CN111754914A (en) * | 2020-06-29 | 2020-10-09 | 昆山国显光电有限公司 | Gamma debugging method and device for display module and display module |
| CN111968580A (en) * | 2020-09-08 | 2020-11-20 | 京东方科技集团股份有限公司 | Gamma debugging method, gamma debugging device and storage medium |
| CN112967676A (en) * | 2021-02-24 | 2021-06-15 | 昆山国显光电有限公司 | Display panel driving method, driving device and display device |
| CN113299216A (en) * | 2021-05-28 | 2021-08-24 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113506535A (en) * | 2021-07-28 | 2021-10-15 | 合肥维信诺科技有限公司 | Binding point selecting method, device, equipment and medium for gamma debugging |
| CN114613339A (en) * | 2022-03-07 | 2022-06-10 | 深圳市华星光电半导体显示技术有限公司 | Chromaticity adjusting method and device of display panel |
| WO2022156326A1 (en) * | 2021-01-22 | 2022-07-28 | 京东方科技集团股份有限公司 | Image quality optimization method and image quality optimization module |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258164A (en) * | 1990-03-08 | 1991-11-18 | Yamatoya & Co Ltd | Picture forming device |
| CN101546509A (en) * | 2009-04-23 | 2009-09-30 | 北京德为视讯科技股份有限公司 | Method for generating target Gamma curve of display |
| CN101546548A (en) * | 2009-04-23 | 2009-09-30 | 北京德为视讯科技股份有限公司 | Composite lookup table method for synchronous correction of Gamma and chrominance of display |
| CN105096827A (en) * | 2015-08-14 | 2015-11-25 | 京东方科技集团股份有限公司 | Gamma curve adjusting method and device |
| CN105869567A (en) * | 2016-06-28 | 2016-08-17 | 京东方科技集团股份有限公司 | Gamma curve adjusting method and device and display device |
-
2019
- 2019-09-26 CN CN201910917616.8A patent/CN110491330B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258164A (en) * | 1990-03-08 | 1991-11-18 | Yamatoya & Co Ltd | Picture forming device |
| CN101546509A (en) * | 2009-04-23 | 2009-09-30 | 北京德为视讯科技股份有限公司 | Method for generating target Gamma curve of display |
| CN101546548A (en) * | 2009-04-23 | 2009-09-30 | 北京德为视讯科技股份有限公司 | Composite lookup table method for synchronous correction of Gamma and chrominance of display |
| CN105096827A (en) * | 2015-08-14 | 2015-11-25 | 京东方科技集团股份有限公司 | Gamma curve adjusting method and device |
| CN105869567A (en) * | 2016-06-28 | 2016-08-17 | 京东方科技集团股份有限公司 | Gamma curve adjusting method and device and display device |
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|---|---|---|---|---|
| CN111754914A (en) * | 2020-06-29 | 2020-10-09 | 昆山国显光电有限公司 | Gamma debugging method and device for display module and display module |
| CN111696470A (en) * | 2020-07-10 | 2020-09-22 | 京东方科技集团股份有限公司 | Display module and display device |
| CN111968580A (en) * | 2020-09-08 | 2020-11-20 | 京东方科技集团股份有限公司 | Gamma debugging method, gamma debugging device and storage medium |
| WO2022156326A1 (en) * | 2021-01-22 | 2022-07-28 | 京东方科技集团股份有限公司 | Image quality optimization method and image quality optimization module |
| CN112967676A (en) * | 2021-02-24 | 2021-06-15 | 昆山国显光电有限公司 | Display panel driving method, driving device and display device |
| CN112967676B (en) * | 2021-02-24 | 2022-03-25 | 昆山国显光电有限公司 | Display panel driving method, driving device and display device |
| CN113299216A (en) * | 2021-05-28 | 2021-08-24 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113299216B (en) * | 2021-05-28 | 2023-01-20 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113506535A (en) * | 2021-07-28 | 2021-10-15 | 合肥维信诺科技有限公司 | Binding point selecting method, device, equipment and medium for gamma debugging |
| CN113506535B (en) * | 2021-07-28 | 2023-04-11 | 合肥维信诺科技有限公司 | Binding point selection method, device, equipment and medium for gamma debugging |
| CN114613339A (en) * | 2022-03-07 | 2022-06-10 | 深圳市华星光电半导体显示技术有限公司 | Chromaticity adjusting method and device of display panel |
| WO2024178894A1 (en) * | 2023-02-28 | 2024-09-06 | 昆山国显光电有限公司 | Driving method and device for display panel, and display driving chip |
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