Patent ID: 11942044
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A display device comprising:
a display panel comprising 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;
a data driver connected to the organic light-emitting sub-pixel, and configured to determine an actual driving digital voltage of each of the organic light-emitting sub-pixels in the detection row; and
a timing controller connected to the organic light-emitting sub-pixel, wherein the timing controller is configured to perform 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; further configured to calculate 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 to count the voltage differences to form a voltage difference set; and further configured to calculate 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 driver is further configured to perform digital-to-analog conversion on the data compensation digital voltage to convert the data compensation digital voltage into the data compensation analog voltage, and to output a matched data compensation analog voltage to each of the organic light-emitting sub-pixels in the detection row;
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 an 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.