WO2018223486A1 - Oled显示面板的补偿表存储方法 - Google Patents

Oled显示面板的补偿表存储方法 Download PDF

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WO2018223486A1
WO2018223486A1 PCT/CN2017/092688 CN2017092688W WO2018223486A1 WO 2018223486 A1 WO2018223486 A1 WO 2018223486A1 CN 2017092688 W CN2017092688 W CN 2017092688W WO 2018223486 A1 WO2018223486 A1 WO 2018223486A1
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Prior art keywords
sub
pixel
compensation
compensation table
calibration
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French (fr)
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邓宇帆
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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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]
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a compensation table storage method for an OLED display panel.
  • OLED Organic Light Emitting Display
  • OLED has no self-illumination, no backlight, high contrast, thin thickness, wide viewing angle, fast response, flexible panel, wide temperature range, and construction. And the excellent features such as simple process, is considered to be an emerging application technology for next-generation flat panel displays.
  • An OLED display device generally includes a substrate, an anode disposed on the substrate, an organic light-emitting layer disposed on the anode, an electron transport layer disposed on the organic light-emitting layer, and a cathode disposed on the electron transport layer.
  • the holes from the anode and the electrons from the cathode are emitted to the organic light-emitting layer, and these electrons and holes are combined to generate an excited electron-hole pair, and the excited electron-hole pair is converted from the excited state to the ground state. Achieve light.
  • the prior art generally employs a compensation table to store compensation information for each pixel in the OLED display.
  • the driver board looks up the compensation table, adjusts the signal, raises the signal in the dark area of the panel, and lowers the signal in the over-bright area to present a uniform display effect.
  • each pixel corresponds to a set of compensation information, and each set of compensation information includes one or more compensation data.
  • the physical meaning of the compensation data depends on the algorithm, usually an adjustment value of a specific gray level or a local gamma value, and an algorithm sets it to the voltage value to be adjusted.
  • the size of the compensation table is equal to the number of pixels multiplied by the size of each set of compensation information. For example, to compensate for a 4k2k OLED display panel (the number of pixel columns is 3840, the number of pixel rows is 2160), assuming each The size of the group compensation information is 24 bits, and the number of colors is red, green and blue.
  • the storage space occupied by the compensation table is 2160*3840*24bit*3 ⁇ 597Mb.
  • the compensation table occupies a large amount of system storage space, and the process of transmitting and burning data on the production line takes a lot of time, which reduces the running speed and production efficiency of the OLED display.
  • the prior art compresses and compresses the data of each sub-pixel of the compensation table, but directly stores the compensation table or compresses each sub-segment separately.
  • the compensation table stored after the pixel data is not Considering the similarity and correlation between Muras for sub-pixels of different colors and the same coordinates, data redundancy exists in the compensation table, and the compression ratio is low.
  • An object of the present invention is to provide a compensation table storage method for an OLED display panel, which can reduce the system storage space occupied by the compensation table and shorten the time for transmitting and burning data on the production line.
  • the present invention provides a compensation table storage method for an OLED display panel, comprising the following steps:
  • Step S1 Obtain a compensation table of the first sub-pixel in the OLED display panel and a compensation table of the second sub-pixel, and define a compensation table of the first sub-pixel as a reference table;
  • Step S2 calculating at least one calibration table according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula;
  • the number of rows and the number of columns of the calibration table are the same as the number of rows and columns of the reference table; the sum of the information entropies of the at least one calibration table is smaller than the information entropy of the compensation table of the second sub-pixel;
  • Step S3 compressing the reference table and the calibration table, and storing the compressed reference table and the calibration table.
  • the colors of the first sub-pixel and the second sub-pixel are different.
  • the first sub-pixel is one of a red, green, and blue sub-pixel
  • the second sub-pixel is another one of the red, green, and blue sub-pixels different from the first sub-pixel.
  • the method of compressing the processing in the step S3 is: algorithm encoding compression, or run length encoding compression.
  • two calibration tables are calculated according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and a preset compensation table conversion formula, where the two calibration tables are respectively A calibration table and a second calibration table.
  • the preset compensation table conversion formula in the step S2 is:
  • C(i,j) is the number of the i-th row and the j-th column in the first calibration table
  • D(i,j) is the number of the i-th row and the j-th column in the second calibration table
  • B(i,j) A is the number of the i-th row and the j-th column in the compensation table of the second sub-pixel
  • A(i, j) is the number of the i-th row and the j-th column in the compensation table of the first sub-pixel
  • i and j are both positive integers.
  • the step S2 calculates a calibration table according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula, where the calibration table is the third calibration. table.
  • the preset compensation table conversion formula in the step S2 is:
  • E(i,j) is the number of the i-th row and the j-th column in the third calibration table
  • B(i,j) is the number of the i-th row and the j-th column in the compensation table of the second sub-pixel
  • A(i) , j) is the number of the i-th row and the j-th column in the compensation table of the first sub-pixel
  • i and j are both positive integers.
  • the precision of the number in the first calibration table in the step S2 is reserved to a single digit.
  • the precision of the number in the first calibration table is reserved to single digits by rounding in the step S2.
  • the invention also provides a compensation table storage method for an OLED display panel, comprising the following steps:
  • Step S1 Obtain a compensation table of the first sub-pixel in the OLED display panel and a compensation table of the second sub-pixel, and define a compensation table of the first sub-pixel as a reference table;
  • Step S2 calculating at least one calibration table according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula;
  • the number of rows and the number of columns of the calibration table are the same as the number of rows and columns of the reference table; the sum of the information entropies of the at least one calibration table is smaller than the information entropy of the compensation table of the second sub-pixel;
  • Step S3 performing compression processing on the reference table and the calibration table, and storing the compressed reference table and the calibration table;
  • the method for compressing in the step S3 is: algorithm coding compression, or run length coding compression;
  • step S2 two calibration tables are calculated according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula, and the two calibration tables are respectively the first calibration Table, and second calibration table;
  • the preset compensation table conversion formula in the step S2 is:
  • C(i,j) is the number of the i-th row and the j-th column in the first calibration table
  • D(i,j) is the number of the i-th row and the j-th column in the second calibration table
  • B(i,j) A is the number of the i-th row and the j-th column in the compensation table of the second sub-pixel
  • A(i, j) is the number of the i-th row and the j-th column in the compensation table of the first sub-pixel
  • i and j are both positive integers.
  • the present invention provides a compensation table storage method for an OLED display panel, by acquiring compensation tables of first and second sub-pixels, and setting a compensation table of the first sub-pixel as a reference table, and then according to The compensation table of the first and second sub-pixels and the preset compensation table conversion formula determine the calibration table, and ensure that the sum of the information entropy of the calibration table is smaller than the information entropy of the compensation table of the second sub-pixel, and finally save the compressed reference Table, calibration table, capable of removing different sub-pixels before compression
  • the correlation between the compensation tables is obtained, so that a better compression ratio and a smaller data amount are obtained after compression, the system storage space occupied by the compensation table is reduced, and the time for transmitting and burning data on the production line is shortened.
  • FIG. 1 is a flow chart of a method for storing a compensation table of an OLED display panel of the present invention.
  • the present invention provides a compensation table storage method for an OLED display panel, including the following steps:
  • Step S1 Acquire a compensation table of the first sub-pixel in the OLED display panel and a compensation table of the second sub-pixel, and define a compensation table of the first sub-pixel as a reference table.
  • the first sub-pixel and the second sub-pixel are two sub-pixels having different colors in the OLED display panel, for example, when the OLED display device includes red, green, and blue sub-pixels, the first One sub-pixel may be one of red, green, and blue sub-pixels in the OLED display device, and the second sub-pixel may be different in red, green, and blue sub-pixels in the OLED display device. Another one of the first sub-pixels.
  • Step S2 calculating at least one calibration table according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula;
  • the number of rows and the number of columns of the calibration table are the same as the number of rows and columns of the reference table; the sum of the information entropies of the at least one calibration table is smaller than the information entropy of the compensation table of the second sub-pixel.
  • two calibrations are calculated according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula.
  • Table, the two calibration tables are a first calibration table and a second calibration table, respectively.
  • the preset compensation table conversion formula in the step S2 is:
  • C(i,j) is the number of the i-th row and the j-th column in the first calibration table
  • D(i,j) is the number of the i-th row and the j-th column in the second calibration table
  • B(i,j) The i-th row in the compensation table for the second sub-pixel
  • A(i, j) is the number of the i-th row and the j-th column in the compensation table of the first sub-pixel
  • i and j are both positive integers.
  • the precision of the number in the first calibration table in the step S2 is reserved to a single digit, and the precision of the number in the first calibration table may be reserved by rounding. To single digits.
  • the step S2 calculates a calibration table according to the compensation table of the first sub-pixel, the compensation table of the second sub-pixel, and the preset compensation table conversion formula.
  • the calibration table is the third calibration table.
  • the preset compensation table conversion formula in the step S2 is:
  • E(i,j) is the number of the i-th row and the j-th column in the third calibration table
  • B(i,j) is the number of the i-th row and the j-th column in the compensation table of the second sub-pixel
  • A(i) , j) is the number of the i-th row and the j-th column in the compensation table of the first sub-pixel
  • i and j are both positive integers.
  • the preset compensation table conversion formula is not limited to the formulas in the first and second embodiments described above, and other suitable formulas may also be applied to the present invention, as long as the information of at least one calibration table obtained after the calculation is guaranteed.
  • the sum of the entropies may be smaller than the information entropy of the compensation table of the second sub-pixel.
  • Step S3 compressing the reference table and the calibration table, and storing the compressed reference table and the calibration table.
  • the method of the compression processing in the step S3 may be: algorithm coding compression, or run-length coding compression.
  • the method of the compression processing in the step S3 is not limited thereto, and other methods capable of achieving the compression processing effect are also applicable to this invention.
  • the compensation tables of the first sub-pixel and the second sub-pixel are obtained, as shown in Table 1 and Table 2, respectively;
  • the compensation table of the first sub-pixel is set as a reference table, and the first calibration table and the second calibration table are obtained according to the compensation table conversion formula provided in the first embodiment, as shown in Table 3 and Table 4;
  • the reference table, the first calibration table, and the second calibration table are compressed, and the reference table, the first calibration table, and the second calibration table are saved.
  • the information entropy of the compensation table of the second sub-pixel shown in Table 2 is 6.3, the estimated compression ratio is 6.3 ⁇ 8 ⁇ 100% ⁇ 79%;
  • the information entropy of the first calibration table shown in Table 3 is 0.8,
  • the estimated compression ratio is 0.8 ⁇ 8 ⁇ 100% ⁇ 1%;
  • the second calibration table shown in Table 4 has an information entropy of 3.5, and the estimated compression ratio is 3.5 ⁇ 8 ⁇ 100% ⁇ 44%, the first calibration table and the first
  • the sum of the estimated compression ratios of the second calibration table is smaller than the estimated compression ratio of the compensation table of the second sub-pixel. It can be seen that the method of the present invention replaces the compensation table of the second sub-pixel by the calibration table compared to the direct storage of the prior art.
  • the method of compensating the two sub-pixels can obtain better compression ratio, smaller data volume, reduce the system storage space occupied by the compensation table, and shorten the time for transmitting and burning data on the production line.
  • an OLED display device generally includes: a red sub-pixel, a green sub-pixel, and a sub-pixel of three colors of a blue sub-pixel, and each sub-pixel of the color corresponds to a compensation table, and the method is saved by the method of the present invention.
  • the compensation table of one of the colors can be set as a reference table, and at least one calibration table corresponding to the compensation tables of the other two colors can be obtained according to the compensation table conversion formula, and finally compressed and stored.
  • a reference table and at least two calibration tables can completely save the three compensation tables corresponding to the sub-pixels of the three colors in the OLED display device, and can convert the formula by using the compensation table used when saving the reference table and the calibration table.
  • the inverse operation restores the original compensation table.
  • the present invention provides a compensation table storage method for an OLED display panel, by acquiring a compensation table of the first and second sub-pixels, and setting a compensation table of the first sub-pixel as a reference table, and then according to the The compensation table of the first and second sub-pixels and the preset compensation table conversion formula determine the calibration table, and ensure that the sum of the information entropy of the calibration table is smaller than the information entropy of the compensation table of the second sub-pixel, and finally save the compressed reference table
  • the calibration table can remove the correlation between the compensation tables of different sub-pixels before compression, thereby obtaining better compression ratio and smaller data amount after compression, reducing the system storage space occupied by the compensation table, and shortening the production line. The time to transfer and burn data.

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Abstract

一种OLED显示面板的补偿表存储方法。通过获取第一和第二子像素的补偿表，并将第一子像素的补偿表设定为基准表，再根据第一和第二子像素的补偿表以及预设的补偿表转换公式求出校准表，并保证校准表的信息熵的和小于第二子像素的补偿表的信息熵，最后保存压缩后的基准表、校准表，能够在压缩前去除不同子像素的补偿表之间的相关性，从而在压缩后获得更佳的压缩率、更小的数据量，减少补偿表占用的系统存储空间，缩短生产线上传输、烧录数据的时间。

Description

OLED显示面板的补偿表存储方法 技术领域
本发明涉及显示技术领域，尤其涉及一种OLED显示面板的补偿表存储方法。
背景技术
有机发光二极管显示器件(Organic Light Emitting Display，OLED)由于同时具备自发光，不需背光源、对比度高、厚度薄、视角广、反应速度快、可用于挠曲性面板、使用温度范围广、构造及制程较简单等优异特性，被认为是下一代平面显示器的新兴应用技术。
OLED显示装置通常包括：基板、设于基板上的阳极、设于阳极上的有机发光层，设于有机发光层上的电子传输层、及设于电子传输层上的阴极。工作时向有机发光层发射来自阳极的空穴和来自阴极的电子，将这些电子和空穴组合产生激发性电子-空穴对，并将激发性电子-空穴对从受激态转换为基态实现发光。
目前在平面显示面板生产过程中由于生产工艺等原因经常会产生Mura(亮度不均匀)，出现亮点或暗点，导致面板的显示品质降低。为了消除OLED显示器Mura，现有技术通常采用补偿表来存储OLED显示器中各像素的补偿信息。放映影像时，驱动板查找补偿表，调整信号，将面板过暗区域的信号调高，过亮区域的信号调低，呈现均匀的显示效果。在补偿表中，每个像素对应于一组补偿信息，每组补偿信息包含一个或多个补偿数据。补偿数据的物理意义视算法而定，通常为特定灰阶的调整值或局域伽马值，也有算法将其设定为待调整的电压值。
在现有技术中，补偿表的大小等于像素数目乘以每组补偿信息的大小，举例来讲，若要补偿4k2k的OLED显示面板(像素列数为3840，像素行数为2160)，假设每组补偿信息的大小为24bit，颜色数目为红绿蓝三色，则补偿表所占用的存储空间为2160*3840*24bit*3≈597Mb。补偿表占用大量系统存储空间，并且在生产线上传输、烧录数据的过程耗费大量时间，降低了OLED显示器的运行速度和生产效率。
为了减小补偿表的大小，降低补偿表占用的系统存储空间，现有技术会将补偿表各个子像素的数据进行压缩处理之后再进行存储，但无论是直接存储补偿表，或分别压缩各子像素的数据之后再存储的补偿表，都没有 考虑到对于不同颜色且相同坐标的子像素，Mura之间存在相似性和相关性，补偿表中都存在数据冗余，压缩率较低。
发明内容
本发明的目的在于提供一种OLED显示面板的补偿表存储方法，能够减少补偿表占用的系统存储空间，缩短生产线上传输、烧录数据的时间。
为实现上述目的，本发明提供了一种OLED显示面板的补偿表存储方法，包括如下步骤：
步骤S1、获取一OLED显示面板中第一子像素的补偿表和第二子像素的补偿表，定义第一子像素的补偿表为基准表；
步骤S2、根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出至少一张校准表；
所述校准表的行数和列数与所述基准表的行数和列数相同；所述至少一张校准表的信息熵的和小于第二子像素的补偿表的信息熵；
步骤S3、对所述基准表、以及校准表进行压缩处理，并存储压缩后的基准表、以及校准表。
所述第一子像素和第二子像素的颜色不同。
所述第一子像素为红色、绿色、及蓝色子像素中的一种，所述第二子像素为红色、绿色、及蓝色子像素中不同于第一子像素的另一种。
所述步骤S3中压缩处理的方法为：算法编码压缩、或游程编码压缩。
可选的，所述步骤S2中根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出两张校准表，该两张校准表分别为第一校准表、及第二校准表。
所述步骤S2中预设的补偿表转换公式为：
C(i，j)＝B(i，j)/A(i，j)×10；
D(i，j)＝B(i，j)－C(i，j)×A(i，j)/10；
其中，C(i，j)为第一校准表中第i行第j列的数，D(i，j)为第二校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
可选的，所述步骤S2根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出一张校准表，该一张校准表为第三校准表。
所述步骤S2中预设的补偿表转换公式为：
E(i，j)＝A(i，j)－B(i，j)；
其中，E(i，j)为第三校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
所述步骤S2中第一校准表中的数的精度保留到个位数。
所述步骤S2中采用四舍五入的方法将第一校准表中的数的精度保留到个位数。
本发明还提供一种OLED显示面板的补偿表存储方法，包括如下步骤：
步骤S1、获取一OLED显示面板中第一子像素的补偿表和第二子像素的补偿表，定义第一子像素的补偿表为基准表；
步骤S2、根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出至少一张校准表；
所述校准表的行数和列数与所述基准表的行数和列数相同；所述至少一张校准表的信息熵的和小于第二子像素的补偿表的信息熵；
步骤S3、对所述基准表、以及校准表进行压缩处理，并存储压缩后的基准表、以及校准表；
其中，所述第一子像素和第二子像素的颜色不同；
其中，所述步骤S3中压缩处理的方法为：算法编码压缩、或游程编码压缩；
其中，所述步骤S2中根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出两张校准表，该两张校准表分别为第一校准表、及第二校准表；
其中，所述步骤S2中预设的补偿表转换公式为：
C(i，j)＝B(i，j)/A(i，j)×10；
D(i，j)＝B(i，j)－C(i，j)×A(i，j)/10；
其中，C(i，j)为第一校准表中第i行第j列的数，D(i，j)为第二校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
本发明的有益效果：本发明提供一种OLED显示面板的补偿表存储方法，通过获取第一和第二子像素的补偿表，并将第一子像素的补偿表设定为基准表，再根据第一和第二子像素的补偿表以及预设的补偿表转换公式求出校准表，并保证校准表的信息熵的和小于第二子像素的补偿表的信息熵，最后保存压缩后的基准表、校准表，能够在压缩前去除不同子像素的 补偿表之间的相关性，从而在压缩后获得更佳的压缩率、更小的数据量，减少补偿表占用的系统存储空间，缩短生产线上传输、烧录数据的时间。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的OLED显示面板的补偿表存储方法的流程图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，本发明提供一种OLED显示面板的补偿表存储方法，包括如下步骤：
步骤S1、获取一OLED显示面板中第一子像素的补偿表和第二子像素的补偿表，定义第一子像素的补偿表为基准表。
具体地，所述第一子像素和第二子像素为该OLED显示面板中颜色不同的两种子像素，例如，当所述OLED显示装置包括红色、绿色、及蓝色子像素时，所述第一子像素可以为该OLED显示装置中的红色、绿色、及蓝色子像素中的一种，所述第二子像素可以为该OLED显示装置中的红色、绿色、及蓝色子像素中不同于第一子像素的另一种。
步骤S2、根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出至少一张校准表；
所述校准表的行数和列数与所述基准表的行数和列数相同；所述至少一张校准表的信息熵的和小于第二子像素的补偿表的信息熵。
可选地，在本发明的第一实施例中，所述步骤S2中根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出两张校准表，该两张校准表分别为第一校准表、及第二校准表。
进一步地，所述步骤S2中预设的补偿表转换公式为：
C(i，j)＝B(i，j)/A(i，j)×10；
D(i，j)＝B(i，j)－C(i，j)×A(i，j)/10；
其中，C(i，j)为第一校准表中第i行第j列的数，D(i，j)为第二校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j 列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
进一步地，在本发明的第一实施例中，所述步骤S2中第一校准表中的数的精度保留到个位数，具体可通过四舍五入的方法将第一校准表中的数的精度保留到个位数。可选地，在本发明的第二实施例中，所述步骤S2根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出一张校准表，该一张校准表为第三校准表。
进一步地，所述步骤S2中预设的补偿表转换公式为：
E(i，j)＝A(i，j)－B(i，j)；
其中，E(i，j)为第三校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
当然，所述预设的补偿表转换公式并不限于上述第一和第二实施例中的公式，其他合适的公式也可以适用于本发明，只要保证计算后得到的至少一张校准表的信息熵的和小于第二子像素的补偿表的信息熵即可。
步骤S3、对所述基准表、以及校准表进行压缩处理，并存储压缩后的基准表、以及校准表。
优选地，所述步骤S3中压缩处理的方法可以为：算法编码压缩、或游程编码压缩，当然所述步骤S3中压缩处理的方法并不限于此，其他能够达到压缩处理效果的方法同样适用于本发明。
举例来讲，首先获取第一子像素和第二子像素的补偿表，分别如表1和表2所示；
表1第一子像素的补偿表
175 173 172
169 168 166
170 170 184
表2第二子像素的补偿表
171 174 170
166 169 169
167 160 169
接着，设定第一子像素的补偿表为基准表，根据第一实施例中提供的补偿表转换公式求出第一校准表和第二校准表，如表3和表4所示；
表3第一校准表
10 10 10
10 10 10
10 9 9
表4第二校准表
-4 1 -2
-3 1 3
-3 7 3
最后，对所述基准表、第一校准表、第二校准表进行压缩处理，并保存基准表、第一校准表和第二校准表。
经计算，表2所示的第二子像素的补偿表的信息熵为6.3，预估压缩率为6.3÷8×100％≈79％；表3所示第一校准表的信息熵为0.8，预估压缩率为0.8÷8×100％≈1％；表4所示第二校准表的信息熵为3.5，预估压缩率为3.5÷8×100％≈44％，第一校准表和第二校准表的预估压缩率之和小于第二子像素的补偿表的预估压缩率，可见本发明通过校准表替代第二子像素的补偿表的方法相比于现有技术中直接存储第二子像素的补偿表的方法，能够获得更佳的压缩率、更小的数据量，减少补偿表占用的系统存储空间，缩短生产线上传输、烧录数据的时间。
一般来讲，一个OLED显示装置通常包括：红色子像素、绿色子像素、以及蓝色子像素三种颜色的子像素，每一种颜色的子像素对应一补偿表，利用本发明的方法保存该OLED显示装的补偿表时，可通过设定其中一种颜色的补偿表为基准表，再根据补偿表转换公式求出其他两种颜色的补偿表对应的至少一张校准表，最后压缩并存储一张基准表和至少两张校准表，即可完整保存该OLED显示装置中三种颜色的子像素对应的三个补偿表，并且可通过保存基准表和校准表时采用的补偿表转换公式的逆运算对原补偿表进行还原。
综上所述，本发明提供一种OLED显示面板的补偿表存储方法，通过获取第一和第二子像素的补偿表，并将第一子像素的补偿表设定为基准表，再根据第一和第二子像素的补偿表以及预设的补偿表转换公式求出校准表，并保证校准表的信息熵的和小于第二子像素的补偿表的信息熵，最后保存压缩后的基准表、校准表，能够在压缩前去除不同子像素的补偿表之间的相关性，从而在压缩后获得更佳的压缩率、更小的数据量，减少补偿表占用的系统存储空间，缩短生产线上传输、烧录数据的时间。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (14)

  1. 一种OLED显示面板的补偿表存储方法，包括如下步骤：
    步骤S1、获取一OLED显示面板中第一子像素的补偿表和第二子像素的补偿表，定义第一子像素的补偿表为基准表；
    步骤S2、根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出至少一张校准表；
    所述校准表的行数和列数与所述基准表的行数和列数相同；所述至少一张校准表的信息熵的和小于第二子像素的补偿表的信息熵；
    步骤S3、对所述基准表、以及校准表进行压缩处理，并存储压缩后的基准表、以及校准表。
  2. 如权利要求1所述的OLED显示面板的补偿表存储方法，其中，所述第一子像素和第二子像素的颜色不同。
  3. 如权利要求2所述的OLED显示面板的补偿表存储方法，其中，所述第一子像素为红色、绿色、及蓝色子像素中的一种，所述第二子像素为红色、绿色、及蓝色子像素中不同于第一子像素的另一种。
  4. 如权利要求1所述的OLED显示面板的补偿表存储方法，其中，所述步骤S3中压缩处理的方法为：算法编码压缩、或游程编码压缩。
  5. 如权利要求1所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出两张校准表，该两张校准表分别为第一校准表、及第二校准表。
  6. 如权利要求5所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中预设的补偿表转换公式为：
    C(i，j)＝B(i，j)/A(i，j)×10；
    D(i，j)＝B(i，j)－C(i，j)×A(i，j)/10；
    其中，C(i，j)为第一校准表中第i行第j列的数，D(i，j)为第二校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
  7. 如权利要求1所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出一张校准表，该一张校准表为第三校准表。
  8. 如权利要求7所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中预设的补偿表转换公式为：
    E(i，j)＝A(i，j)－B(i，j)；
    其中，E(i，j)为第三校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
  9. 如权利要求6所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中第一校准表中的数的精度保留到个位数。
  10. 如权利要求9所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中采用四舍五入的方法将第一校准表中的数的精度保留到个位数。
  11. 一种OLED显示面板的补偿表存储方法，包括如下步骤：
    步骤S1、获取一OLED显示面板中第一子像素的补偿表和第二子像素的补偿表，定义第一子像素的补偿表为基准表；
    步骤S2、根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出至少一张校准表；
    所述校准表的行数和列数与所述基准表的行数和列数相同；所述至少一张校准表的信息熵的和小于第二子像素的补偿表的信息熵；
    步骤S3、对所述基准表、以及校准表进行压缩处理，并存储压缩后的基准表、以及校准表；
    其中，所述第一子像素和第二子像素的颜色不同；
    其中，所述步骤S3中压缩处理的方法为：算法编码压缩、或游程编码压缩；
    其中，所述步骤S2中根据第一子像素的补偿表、第二子像素的补偿表、以及预设的补偿表转换公式计算得出两张校准表，该两张校准表分别为第一校准表、及第二校准表；
    其中，所述步骤S2中预设的补偿表转换公式为：
    C(i，j)＝B(i，j)/A(i，j)×10；
    D(i，j)＝B(i，j)－C(i，j)×A(i，j)/10；
    其中，C(i，j)为第一校准表中第i行第j列的数，D(i，j)为第二校准表中第i行第j列的数，B(i，j)为第二子像素的补偿表中第i行第j列的数，A(i，j)为第一子像素的补偿表中第i行第j列的数，i、j均为正整数。
  12. 如权利要求11所述的OLED显示面板的补偿表存储方法，其中， 所述第一子像素为红色、绿色、及蓝色子像素中的一种，所述第二子像素为红色、绿色、及蓝色子像素中不同于第一子像素的另一种。
  13. 如权利要求11所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中第一校准表中的数的精度保留到个位数。
  14. 如权利要求13所述的OLED显示面板的补偿表存储方法，其中，所述步骤S2中采用四舍五入的方法将第一校准表中的数的精度保留到个位数。
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CN116129812A (zh) * 2023-02-28 2023-05-16 京东方科技集团股份有限公司 计算机可读存储介质、显示装置及其驱动电路、驱动方法
CN116682352A (zh) * 2023-06-26 2023-09-01 合肥维信诺科技有限公司 显示面板的数据处理方法、装置及计算机可读存储介质

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