Patent ID: 11955048
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display device comprising:
a display panel which displays an image; and
a panel driving block which receives an input image signal and controls driving of the display panel, the panel driving block including:
a dithering judgment block which determines whether a first sub-image signal corresponding to a first image requiring dithering is included in the input image signal;
a memory which stores a plurality of dithering patterns respectively displayed in a plurality of unit areas of the display panel; and
a dithering compensation block which:
among the plurality of dithering patterns, reads out dithering patterns, which correspond to the first sub-image signal, from the memory;
generates a compensation dithering pattern by the read dithering patterns and a random number table; and
outputs a correction image signal through the first sub-image signal and the compensation dithering pattern,
wherein the first image is displayed in a stain area of the display panel, and the stain area includes at least one unit area,
wherein the random number table includes a plurality of unit cells respectively corresponding to the plurality of unit areas included in the stain area and includes a plurality of area random numbers allocated to each of the plurality of unit cells.