Patent ID: 11961493
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A display device, comprising:
a display panel including a plurality of pixel rows arranged in sequence; and
a panel driver configured to sequentially receive a plurality of line data for the pixel rows in each frame period, and to drive the display panel based on the line data, the panel driver including:
a current control circuit configured to determine a current control value for a specific pixel row based on line data received for the pixel rows arranged before the specific pixel row in a current frame period, line data received for the specific pixel row in a previous frame period and line data received for pixel rows arranged after the specific pixel row in the previous frame period; and
a data correction circuit configured to correct the line data for the specific pixel row based on the current control value in the current frame period,

wherein the current control circuit includes:
a gray-luminance converter configured to convert gray levels represented by pixel data included in first through N-th line data of the plurality of line data for first through N-th pixel rows of the pixel rows into pixel luminances for each of the first through the N-th pixel rows, where N is an integer greater than 1;
a line luminance calculator configured to calculate a line luminance for each of the first through the N-th pixel rows by summing the pixel luminances for each of the first through the N-th pixel rows;
an average luminance level determiner configured to store line luminances for the first through the N-th pixel rows in a first-in first-out (FIFO) manner, and to determine an average panel luminance level based on the line luminances for the first through the N-th pixel rows;
a luminance domain scale factor determiner configured to determine a luminance domain scale factor corresponding to the average panel luminance level; and
a gray domain scale factor determiner configured to convert the luminance domain scale factor into a gray domain scale factor as the current control value.