US 12,217,687 B1
Stress compensation system, stress compensation method, and apparatus using the same
Gregory William Cook, San Jose, CA (US)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Oct. 12, 2023, as Appl. No. 18/485,628.
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0295 (2013.01); G09G 2320/045 (2013.01); G09G 2320/046 (2013.01); G09G 2320/048 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of compensating for accumulated stress for a display device, the method comprising:
receiving display data including pixel data, the received display data including a plurality of consecutive frames;
producing compensated display data from the received display data using a stress profile of accumulated stress of a display panel, the compensated display data including a plurality of consecutive frames;
providing the compensated display data to the display panel;
sampling the compensated display data to produce a plurality of sampled pixel data for a plurality of pixels disposed in a block of spatially contiguous pixels, the block of spatially contiguous pixels including a pixel;
producing a quantized unbiased average stress value for the pixel using the plurality of sampled pixel data, the producing of the quantized unbiased average stress value including adding a dither value to an average stress value; and
updating the stress profile using the quantized unbiased average stress value.