CN108735140B - Compensation table storage method of display panel - Google Patents
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Abstract
The invention provides a method for storing a compensation table of a display panel, which comprises the steps of respectively obtaining a multi-gray-scale compensation table of a first sub-pixel, a second sub-pixel and a third sub-pixel of the display panel; fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the first sub-pixel according to a unitary n (n is larger than or equal to 1) order function relationship to obtain a first mergeable coefficient and a first non-mergeable coefficient of a unitary n (n is larger than or equal to 1) order function, recording all the first mergeable coefficients in a first coefficient table, and recording all the first non-mergeable coefficients in a second coefficient table; the fitting process of the second sub-pixel and the third sub-pixel is consistent with the first sub-pixel. The information content of the compensation table is reduced by fitting different sub-pixels according to the unitary n (n is more than or equal to 1) order function relationship.
Description
Technical Field
The invention relates to the technical field of display, in particular to a compensation table storage method of a display panel.
Background
At present, Mura (uneven brightness) is often generated due to reasons such as production process and the like in the production process of a display panel of a display, and bright spots or dark spots occur, so that the display quality of the panel is reduced. To eliminate Mura of the display panel, a compensation table is generally used to store compensation information for each pixel. When the image is projected, the driving board searches the compensation table, adjusts the signal, heightens the signal of the panel in the dark area, and lowers the signal of the panel in the bright area, so that the uniform display effect is presented. In the compensation table, each pixel corresponds to a set of compensation information, each set of compensation information containing one or more compensation data. The physical meaning of the compensation data depends on the algorithm, usually the adjustment value for a particular gray level, and there is also an algorithm that sets it to the voltage value to be adjusted.
And the size of the compensation table is equal to the number of panel pixels multiplied by the size of each set of compensation information. Taking a 55-inch UHD RGB panel as an example, assuming that the compensation information of each sub-pixel is 24 bits, the data amount of the compensation table is 2160 × 3840 × 24 bits × 3 ≈ 597 Mb. The compensation table occupies a large amount of system storage resources, has high requirements on a hardware system, and consumes time in the process of transmitting and burning data on a production line.
Disclosure of Invention
The embodiment of the invention provides a method for storing a compensation table of a display panel; the technical problems that an existing compensation table occupies a large amount of system storage resources, the requirement on a hardware system is high, and time is consumed in the process of transmitting and burning data on a production line are solved.
The embodiment of the invention provides a method for storing a compensation table of a display panel, which comprises the following steps:
step S1: respectively obtaining a multi-gray-scale compensation table of a first sub-pixel, a second sub-pixel and a third sub-pixel of a display panel;
step S2: fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the first sub-pixel according to a unitary n (n is larger than or equal to 1) time function relationship to obtain a first mergeable coefficient and a first non-mergeable coefficient of the unitary n (n is larger than or equal to 1) time function, recording all the first mergeable coefficients in a first coefficient table, and recording all the first non-mergeable coefficients in a second coefficient table;
fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the second sub-pixel according to a unitary n (n is larger than or equal to 1) times function relationship to obtain a second mergeable coefficient and a second non-mergeable coefficient of the unitary n (n is larger than or equal to 1) times function, recording all the second mergeable coefficients in a third coefficient table, and recording all the second non-mergeable coefficients in a fourth coefficient table;
fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the third sub-pixel according to a unitary n (n is larger than or equal to 1) order function relationship to obtain a third mergeable coefficient and a third non-mergeable coefficient of the unitary n (n is larger than or equal to 1) order function, recording all the third mergeable coefficients in a fifth coefficient table, and recording all the third non-mergeable coefficients in a sixth coefficient table;
step S3: judging whether the absolute difference value of the maximum value and the minimum value in all the first mergeable coefficients, all the second mergeable coefficients and all the third mergeable coefficients conforms to a set difference value range or not;
step S4: if the absolute difference value meets the set difference value range, combining the first coefficient table, the third coefficient table and the fifth coefficient table into a single coefficient value;
step S5: saving the coefficient value and the second coefficient table, the fourth coefficient table, the sixth coefficient table.
In the present invention, the first mergeable coefficient, the second mergeable coefficient, and the third mergeable coefficient are all the highest-order term coefficients of the unary n (n ≧ 1) order functions.
In the present invention, the step S3 includes:
step S31: acquiring a maximum first mergeable coefficient value and a minimum first mergeable coefficient value of the first mergeable coefficients of the first coefficient table; acquiring a maximum second mergeable coefficient value and a minimum second mergeable coefficient value of the second mergeable coefficients of the second coefficient table; obtaining a maximum third combinable coefficient value and a minimum third combinable coefficient value of the third combinable coefficients of the third coefficient table;
step S32: comparing the maximum first combinable coefficient value, the maximum second combinable coefficient value and the maximum third combinable coefficient value to obtain a maximum combinable coefficient value; comparing the minimum first combinable coefficient value, the minimum second combinable coefficient value, and the minimum third combinable coefficient value to obtain a minimum combinable coefficient value;
step S33: subtracting the minimum combinable coefficient value from the maximum combinable coefficient value and then carrying out absolute value processing to obtain the absolute difference value;
step S34: and comparing the absolute difference value with the set difference value range.
In the present invention, the step S4 further includes:
and if the absolute difference value does not accord with the set difference value range, storing the first coefficient table, the second coefficient table, the third coefficient table, the fourth coefficient table, the fifth coefficient table and the sixth coefficient table.
In the present invention, when the first coefficient table, the third coefficient table, and the fifth coefficient table are combined into a single coefficient value, the flow proceeds to step S6, and step S6:
and performing compression processing on the second coefficient table, the fourth coefficient table, the sixth coefficient table and the coefficient values.
In the present invention, if the absolute difference does not meet the set difference range, the process proceeds to step S7, step S7:
performing compression processing on the first coefficient table, the second coefficient table, the third coefficient table, the fourth coefficient table, the fifth coefficient table, and the sixth coefficient table.
In the invention, the compression processing method comprises the following steps: algorithm code compression or run-length code compression.
In the present invention, in step S4, the coefficient value is one of a mean value of a sum of the first mergeable coefficients, a mean value of a sum of the second mergeable coefficients, a mean value of a sum of the third mergeable coefficients, or a mean value of a sum of the first mergeable coefficients, the second mergeable coefficients, and the third mergeable coefficients.
In the present invention, the set difference range in step S3 is equal to or less than 0.1.
In the invention, n is less than or equal to 5.
Compared with the compensation table storage method of the display panel in the prior art, the compensation table storage method provided by the invention has the advantages that a unitary n (n is more than or equal to 1) order function relation fitting is carried out among different gray scale compensation tables of the first sub-pixel, the second sub-pixel and the third sub-pixel respectively, so that different coefficient compensation tables for recording combinable coefficients and non-combinable coefficients in a unitary n (n is more than or equal to 1) order function are obtained, the number of the compensation tables of each sub-pixel is reduced, and the data volume is further reduced;
in addition, further, the first mergeable coefficient in the first coefficient table, the first mergeable coefficient in the third coefficient table, and the first mergeable coefficient in the fifth coefficient table are determined, and if the absolute difference value between the maximum value and the minimum value of all the mergeable coefficients conforms to the set difference value range, the first coefficient table, the third coefficient table, and the fifth coefficient table may be merged into one coefficient value; the data size of each sub-pixel compensation table is further reduced;
the technical problems that the existing compensation table occupies a large amount of system storage resources, has high requirements on a hardware system, and consumes time in the process of transmitting and burning data on a production line are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the invention, and it will be clear to a person skilled in the art that other drawings can be derived from them without inventive effort.
FIG. 1 is a flowchart illustrating a compensation table storing method of a display panel according to an embodiment of the present invention;
fig. 2 is a flowchart of step S3 of the compensation table storing method of the display panel according to the embodiment of the invention.
Detailed Description
Refer to the drawings wherein like reference numbers refer to like elements throughout. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments that are not detailed herein.
Referring to fig. 1, fig. 1 is a flowchart illustrating a compensation table storing method of a display panel according to an embodiment of the present invention.
The method for storing the compensation table of the display panel comprises the following steps:
step S1: respectively obtaining a multi-gray-scale compensation table of a first sub-pixel, a second sub-pixel and a third sub-pixel of a display panel;
step S2: fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the first sub-pixel according to a unitary n (n is larger than or equal to 1) time function relationship to obtain a first mergeable coefficient and a first non-mergeable coefficient of the unitary n (n is larger than or equal to 1) time function, recording all the first mergeable coefficients in a first coefficient table, and recording all the first non-mergeable coefficients in a second coefficient table;
fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the second sub-pixel according to a unitary n (n is larger than or equal to 1) times function relationship to obtain a second mergeable coefficient and a second non-mergeable coefficient of the unitary n (n is larger than or equal to 1) times function, recording all the second mergeable coefficients in a third coefficient table, and recording all the second non-mergeable coefficients in a fourth coefficient table;
fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the third sub-pixel according to a unitary n (n is larger than or equal to 1) order function relationship to obtain a third mergeable coefficient and a third non-mergeable coefficient of the unitary n (n is larger than or equal to 1) order function, recording all the third mergeable coefficients in a fifth coefficient table, and recording all the third non-mergeable coefficients in a sixth coefficient table;
step S3: judging whether the absolute difference value of the maximum value and the minimum value in all the first mergeable coefficients, all the second mergeable coefficients and all the third mergeable coefficients conforms to a set difference value range or not;
step S4: if the absolute difference value meets the set difference value range, combining the first coefficient table, the third coefficient table and the fifth coefficient table into a single coefficient value;
step S5: saving the coefficient value and the second coefficient table, the fourth coefficient table, the sixth coefficient table.
Step S2 in the present embodiment: "the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the first sub-pixel are fitted according to a unitary n (n is larger than or equal to 1) times function relationship to obtain a first mergeable coefficient and a first non-mergeable coefficient of the unitary n (n is larger than or equal to 1) times function, all the first mergeable coefficients are recorded in a first coefficient table, and all the first non-mergeable coefficients are recorded in a second coefficient table; "
In this embodiment, the first mergeable coefficient, the second mergeable coefficient, and the third mergeable coefficient are all the highest-order term coefficients of the unary n (n ≧ 1) -order functions.
The present embodiment is described by taking the first sub-pixel as red and the first sub-pixel has four gray levels (25/64/128/192), but the present invention is not limited thereto.
When n is equal to 1, fitting the original gray scales and the compensation values corresponding to the same coordinate positions among the four gray scale compensation tables of the first sub-pixel according to a unitary linear function relationship (y is kx + b, k is not equal to 0) to obtain a first mergeable coefficient (slope k) and a first non-mergeable coefficient (intercept b) of the unitary linear function, recording all the slopes k in a first coefficient table, and recording all the intercepts b in a second coefficient table.
During fitting, fitting the original gray scale and the compensation value corresponding to the four coordinate points at the same coordinate position into a unitary linear function to obtain a slope k and an intercept b; for example, the original gray scale and the compensation value corresponding to the seating angle of the 25 gray scale compensation table, the 64 gray scale compensation table, the 128 gray scale compensation table and the 192 gray scale compensation table are (x1, y1), (x2, y2), (x3, y3) and (x4, y4), and the four groups of values are fitted into y-kx + b, so as to obtain the slope k and the intercept b. And after the original gray scales and the compensation values corresponding to all the same coordinate positions in the four gray scale compensation tables are fitted into a unitary linear function, all the obtained slopes k are recorded in a first coefficient table and all the obtained intercepts b are recorded in a second coefficient table.
In summary, in the fitting process, four compensation tables are reduced to two compensation tables, so that the information amount is reduced.
Similarly, the first sub-pixel is red and has four gray levels (25/64/128/192).
When n is equal to 2, the original gray scale and the compensation value corresponding to the same coordinate position between the four gray scale compensation tables of the first sub-pixel are according to a unitary quadratic function relation (y is ax)2+ bx + c, a ≠ 0) to obtain a first mergeable coefficient (quadratic coefficient a) and a first non-mergeable coefficient of the unitary quadratic function, wherein the first non-mergeable coefficient comprises a first subcoefficient b and a constant item c, and the second coefficient table comprises a second subcoefficient table and a second constant item coefficient table;
and all the quadratic coefficient a are recorded in a first coefficient table, all the first quadratic coefficient b are recorded in a second quadratic coefficient table, and all the constant coefficient c are recorded in a second constant coefficient table.
Wherein, in the fitting process, the same coordinate position is usedFitting the original gray scales and the compensation values corresponding to the four coordinate points into a unitary quadratic function to obtain a quadratic term coefficient a, a primary term coefficient b and a constant term coefficient c; for example, the original gray levels and compensation values corresponding to the seating angles of the 25 gray level compensation table, the 64 gray level compensation table, the 128 gray level compensation table, and the 192 gray level compensation table are (x1, y1), (x2, y2), (x3, y3), and (x4, y4), respectively, and four groups of values are fitted to y ═ ax2+ bx + c, thereby obtaining a quadratic term coefficient a, a primary term coefficient b and a constant term coefficient c; if deviation exists among the four groups of data, the fitting tool can adjust by itself to obtain a reasonable quadratic term coefficient a, a first order term coefficient b and a constant term coefficient c. And after the original gray scales and the compensation values corresponding to all the same coordinate positions in the four gray scale compensation tables are fitted into a unitary quadratic function, all the obtained quadratic term coefficients a are recorded in a first coefficient table, all the obtained primary term coefficients b are recorded in a second primary term coefficient table, and all the constant term coefficients c are recorded in a second constant term coefficient table.
In summary, in the fitting process, four compensation tables are reduced to three compensation tables, so that the information amount is reduced.
Similarly, the fitting process of the second sub-pixel and the third sub-pixel is the same as the fitting process of the first sub-pixel.
In this embodiment, n is less than or equal to 5, because when the value of n is greater than 5, for example, n is equal to 6, when a plurality of gray scale compensation tables of a single sub-pixel are fitted according to a univariate sextuple function relationship, 7 coefficient compensation tables are generated, and when the number of gray scales of the single sub-pixel is not large, the amount of information is increased, which causes an adverse effect.
In the present embodiment, further, steps S3 to S4 are procedures of determining and merging the first coefficient table, the third coefficient table, and the fifth coefficient table generated as described above:
referring to fig. 2, fig. 2 is a flowchart illustrating the step S3 of the method for storing the compensation table of the display panel according to the embodiment of the invention. Step S3 is a judgment step, which includes:
step S31: acquiring a maximum first mergeable coefficient value and a minimum first mergeable coefficient value of the first mergeable coefficients of the first coefficient table; acquiring a maximum second mergeable coefficient value and a minimum second mergeable coefficient value of the second mergeable coefficients of the second coefficient table; obtaining a maximum third combinable coefficient value and a minimum third combinable coefficient value of the third combinable coefficients of the third coefficient table;
step S32: comparing the maximum first combinable coefficient value, the maximum second combinable coefficient value and the maximum third combinable coefficient value to obtain a maximum combinable coefficient value; comparing the minimum first combinable coefficient value, the minimum second combinable coefficient value, and the minimum third combinable coefficient value to obtain a minimum combinable coefficient value;
step S33: subtracting the minimum combinable coefficient value from the maximum combinable coefficient value and then carrying out absolute value processing to obtain the absolute difference value;
step S34: and comparing the absolute difference value with the set difference value range.
In step S4 of the present embodiment, "if the absolute difference value matches the set difference value range, the first coefficient table, the third coefficient table, and the fifth coefficient table are merged into a single coefficient value; if the absolute difference value does not accord with the set difference value range, storing the first coefficient table, the second coefficient table, the third coefficient table, the fourth coefficient table, the fifth coefficient table and the sixth coefficient table; "
In step S4, when the absolute difference value matches the set difference value range, the amount of information of the compensation table may be further reduced, that is, the first coefficient table, the third coefficient table, and the fifth coefficient table are combined into a single coefficient value.
Specifically, the set difference range is equal to or less than 0.1. When the setting difference value becomes large and the combination is performed, the situation that the deviation of the compensation value is too large occurs in the process of performing the pixel compensation operation on the subsequent display panel, so that the problem of uneven display of the display panel cannot be solved.
In this embodiment, the method of storing the compensation table of the display panel further includes a step S6 of performing compression processing on the second coefficient table, the fourth coefficient table, the sixth coefficient table, and the coefficient values.
That is, when the first coefficient table, the third coefficient table, and the fifth coefficient table are combined into a single coefficient value, step S6 performs compression processing on the second coefficient table, the fourth coefficient table, the sixth coefficient table, and the coefficient value.
The compression processing method further compresses the newly generated second coefficient table, fourth coefficient table, and sixth coefficient table and coefficient values to reduce the amount of information.
If the absolute difference does not match the set difference range, the process proceeds to step S7, where the first coefficient table, the second coefficient table, the third coefficient table, the fourth coefficient table, the fifth coefficient table, and the sixth coefficient table are compressed.
The compression processing method further compresses the newly generated first coefficient table, second coefficient table, third coefficient table, fourth coefficient table, fifth coefficient table and sixth coefficient table and coefficient values to reduce the information amount.
The optional compression processing method comprises the following steps: algorithm code compression or run-length code compression.
In this embodiment, in step S4, the coefficient value is one of an average value of a sum of the first mergeable coefficients, an average value of a sum of the second mergeable coefficients, an average value of a sum of the third mergeable coefficients, and an average value of a sum of the first mergeable coefficients, the second mergeable coefficients, and the third mergeable coefficients.
Compared with the compensation table storage method of the display panel in the prior art, the compensation table storage method provided by the invention has the advantages that a unitary n (n is more than or equal to 1) order function relation fitting is carried out among different gray scale compensation tables of the first sub-pixel, the second sub-pixel and the third sub-pixel respectively, so that different coefficient compensation tables for recording combinable coefficients and non-combinable coefficients in a unitary n (n is more than or equal to 1) order function are obtained, the number of the compensation tables of each sub-pixel is reduced, and the data volume is further reduced;
in addition, further, the first mergeable coefficient in the first coefficient table, the first mergeable coefficient in the third coefficient table, and the first mergeable coefficient in the fifth coefficient table are determined, and if the absolute difference value between the maximum value and the minimum value of all the mergeable coefficients conforms to the set difference value range, the first coefficient table, the third coefficient table, and the fifth coefficient table may be merged into one coefficient value; the data size of each sub-pixel compensation table is further reduced; the technical problems that the existing compensation table occupies a large amount of system storage resources, has high requirements on a hardware system, and consumes time in the process of transmitting and burning data on a production line are solved.
Although the disclosure has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present disclosure includes all such modifications and alterations, and is limited only by the scope of the appended claims. In addition, while a particular feature of the disclosure may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for a given or particular application. Furthermore, to the extent that the terms "includes," has, "" contains, "or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising.
In summary, although the present invention has been disclosed in the foregoing embodiments, the serial numbers before the embodiments, such as "first" and "second", are used for convenience of description only, and do not limit the sequence of the embodiments of the present invention. Furthermore, the above embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be limited by the appended claims.
Claims (10)
1. A method for storing a compensation table of a display panel is characterized by comprising the following steps:
step S1: respectively obtaining a multi-gray-scale compensation table of a first sub-pixel, a second sub-pixel and a third sub-pixel of a display panel;
step S2: fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the first sub-pixels according to a unitary n-time function relationship to obtain first mergeable coefficients and first non-mergeable coefficients of the unitary n-time function, recording all the first mergeable coefficients in a first coefficient table, recording all the first non-mergeable coefficients in a second coefficient table, wherein n is more than or equal to 1;
fitting the original gray scales and the compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the second sub-pixels according to a unitary n-time function relationship to obtain second mergeable coefficients and second non-mergeable coefficients of the unitary n-time function, recording all the second mergeable coefficients in a third coefficient table, and recording all the second non-mergeable coefficients in a fourth coefficient table;
fitting the original gray scales and compensation values corresponding to the same coordinate positions among the multi-gray scale compensation tables of the third sub-pixel according to a unitary n-order function relationship to obtain a third mergeable coefficient and a third non-mergeable coefficient of the unitary n-order function, recording all the third mergeable coefficients in a fifth coefficient table, and recording all the third non-mergeable coefficients in a sixth coefficient table;
step S3: judging whether the absolute difference value of the maximum value and the minimum value in all the first mergeable coefficients, all the second mergeable coefficients and all the third mergeable coefficients conforms to a set difference value range or not;
step S4: if the absolute difference value meets the set difference value range, combining the first coefficient table, the third coefficient table and the fifth coefficient table into a single coefficient value;
step S5: saving the coefficient value and the second coefficient table, the fourth coefficient table, the sixth coefficient table.
2. The method according to claim 1, wherein the first combinable coefficient, the second combinable coefficient, and the third combinable coefficient are all highest-order coefficients of the unary nth-order function.
3. The method for storing compensation tables of a display panel according to claim 1, wherein the step S3 comprises:
step S31: acquiring a maximum first mergeable coefficient value and a minimum first mergeable coefficient value of the first mergeable coefficients of the first coefficient table; acquiring a maximum second mergeable coefficient value and a minimum second mergeable coefficient value of the second mergeable coefficients of the second coefficient table; obtaining a maximum third combinable coefficient value and a minimum third combinable coefficient value of the third combinable coefficients of the third coefficient table;
step S32: comparing the maximum first combinable coefficient value, the maximum second combinable coefficient value and the maximum third combinable coefficient value to obtain a maximum combinable coefficient value; comparing the minimum first combinable coefficient value, the minimum second combinable coefficient value, and the minimum third combinable coefficient value to obtain a minimum combinable coefficient value;
step S33: subtracting the minimum combinable coefficient value from the maximum combinable coefficient value and then carrying out absolute value processing to obtain the absolute difference value;
step S34: and comparing the absolute difference value with the set difference value range.
4. The method for storing compensation tables of a display panel according to claim 1, wherein the step S4 further comprises:
and if the absolute difference value does not accord with the set difference value range, storing the first coefficient table, the second coefficient table, the third coefficient table, the fourth coefficient table, the fifth coefficient table and the sixth coefficient table.
5. The compensation table storage method of a display panel according to claim 1, further comprising step S6:
and performing compression processing on the second coefficient table, the fourth coefficient table, the sixth coefficient table and the coefficient values.
6. The compensation table storage method of a display panel according to claim 4, further comprising step S7:
performing compression processing on the first coefficient table, the second coefficient table, the third coefficient table, the fourth coefficient table, the fifth coefficient table, and the sixth coefficient table.
7. The method for storing the compensation table of the display panel according to claim 5 or 6, wherein the compression processing method comprises: algorithm code compression or run-length code compression.
8. The method for storing a compensation table of a display panel according to claim 1, wherein in step S4, the coefficient value is one of an average value of a sum of the first combinable coefficients, an average value of a sum of the second combinable coefficients, an average value of a sum of the third combinable coefficients, or an average value of a sum of the first combinable coefficients, the second combinable coefficients, and the third combinable coefficients.
9. The method for storing the compensation table of the display panel according to claim 1, wherein the set difference range in the step S3 is 0.1 or less.
10. The method as claimed in claim 1, wherein n is less than or equal to 5 when the first and second sub-pixels each have 7 gray scale levels.
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| KR100816301B1 (en) * | 2006-05-24 | 2008-03-24 | 엠텍비젼 주식회사 | Compensation device for color deviation, compensation method, image processor, digital processing device, recording medium |
| US7773061B2 (en) * | 2006-11-03 | 2010-08-10 | Global Oled Technology Llc | Method and apparatus for uniformity compensation in an OLED display |
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