US 11,842,696 B2
Display device, and method of operating a display device
Kihyun Pyun, Gwangmyeong-si (KR); and Jang-Hoon Kwak, Cheonan-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Sep. 30, 2022, as Appl. No. 17/956,942.
Claims priority of application No. 10-2022-0041158 (KR), filed on Apr. 1, 2022.
Prior Publication US 2023/0317018 A1, Oct. 5, 2023
Int. Cl. G09G 3/3291 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0271 (2013.01); G09G 2330/021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of pixels, the plurality of pixels including a plurality of pixel blocks;
a current sensor connected to the display panel;
a controller, the controller including:
a gray-data voltage storing block storing gray-data voltage information for each of the plurality of pixel blocks,
a block load gain extracting block generating gray-block load gain information for each of the plurality of pixel blocks based on the gray-data voltage information,
a block load generating block generating a block representative gray level and a block load for each of the plurality of pixel blocks by analyzing input image data,
a final load generating block generating a final load for the display panel based on the gray-block load gain information, the block representative gray level and the block load,
a current control block determining a scale factor based on the final load and a sensing current value from the current sensor, and
a data correction block generating output image data by applying the scale factor to the input image data; and
a data driver providing data voltages to the plurality of pixels based on the output image data.