US 12,118,950 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 Oct. 31, 2023, as Appl. No. 18/498,033.
Application 18/498,033 is a continuation of application No. 17/956,942, filed on Sep. 30, 2022, granted, now 11,842,696.
Claims priority of application No. 10-2022-0041158 (KR), filed on Apr. 1, 2022.
Prior Publication US 2024/0062727 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/3291 (2016.01); G09G 3/20 (2006.01); G09G 3/3233 (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 power management circuit configured to provide a power supply voltage to the display panel;
a current sensor connected to the display panel, and configured to generate a sensing current value by sensing a current of the display panel;
a controller configured to receive the sensing current value from the current sensor to store gray-data voltage information for each of the plurality of pixel blocks, to generate gray-block load gain information for each of the plurality of pixel blocks based on the gray-data voltage information, to generate a block representative gray level and a block load for each of the plurality of pixel blocks by analyzing input image data, to generate a final load for the display panel based on the gray-block load gain information, the block representative gray level and the block load, to determine a scale factor based on the final load and the sensing current value, and to generate 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.