US 11,942,044 B2
Pixel compensation method, pixel compensation device and display device
Xueyong Huang, Shenzhen (CN); and Haoxuan Zheng, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Filed by HKC CORPORATION LIMITED, Shenzhen (CN)
Filed on Dec. 22, 2022, as Appl. No. 18/145,377.
Claims priority of application No. 202210741595.0 (CN), filed on Jun. 28, 2022.
Prior Publication US 2023/0419911 A1, Dec. 28, 2023
Int. Cl. G09G 3/3275 (2016.01); G09G 3/20 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/3275 (2013.01) [G09G 3/2096 (2013.01); G09G 3/3233 (2013.01); G09G 2300/0828 (2013.01); G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/043 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel compensation method, for a display panel which comprises a plurality of rows of organic light-emitting sub-pixel groups comprising a plurality of organic light-emitting sub-pixels arranged in a column direction, wherein at least one of the plurality of rows of organic light-emitting sub-pixel groups is a detection row, wherein the pixel compensation method comprises:
determining an actual driving digital voltage of each of the organic light-emitting sub-pixels in a detection row;
performing mean value calculation based on the actual driving digital voltage of each of the organic light-emitting sub-pixels in the detection row to determine an average driving digital voltage corresponding to the detection row;
calculating a voltage difference between the actual driving digital voltage of each of the organic light-emitting sub-pixels in the detection row and the average driving digital voltage, and counting the voltage differences to form a voltage difference set; and
outputting a corresponding data compensation analog voltage to each of the organic light-emitting sub-pixels in the detection row when an absolute value of a maximum voltage difference in the voltage difference set is greater than or equal to a target threshold;
wherein the data compensation analog voltage is converted from a data compensation digital voltage by performing digital-to-analog conversion;
wherein when the voltage difference is negative, the data compensation digital voltage output to the corresponding organic light-emitting sub-pixel is larger than the original data digital voltage;
wherein when the voltage difference is positive, the data compensation digital voltage output to the corresponding organic light-emitting sub-pixel is smaller than the original data digital voltage;
wherein when the voltage difference is zero, the original data digital voltage is output to the corresponding organic light-emitting sub-pixel; and
wherein the data compensation digital voltage is relative to the original data digital voltage, line loss, and conversion error.