US 12,014,670 B2
Display device and method of driving the same
Min-Seok Bae, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Aug. 2, 2022, as Appl. No. 17/879,391.
Claims priority of application No. 10-2021-0184441 (KR), filed on Dec. 22, 2021.
Prior Publication US 2023/0196973 A1, Jun. 22, 2023
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2096 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0828 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0275 (2013.01); G09G 2310/0291 (2013.01); G09G 2310/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including pixels;
a data driver configured to apply a data voltage to each of the pixels, to apply a first reference voltage to the pixels in a first period of a first sensing period to generate first sensing data corresponding to a first driving current flowing through a driving transistor of each of the pixels, and to apply a second reference voltage to the pixels in a second period of the first sensing period to generate second sensing data corresponding to a second driving current flowing through the driving transistor of each of the pixels; and
a driving controller configured to receive the first sensing data and the second sensing data from the data driver to compensate input image data based on the first sensing data and the second sensing data,
wherein the driving controller is configured to calculate a threshold voltage value of the driving transistor of each of the pixels based on the first sensing data and the second sensing data,
wherein the data driver is configured to apply a third reference voltage to the pixels in a second sensing period to generate third sensing data corresponding to a third driving current flowing through the driving transistor of each of the pixels, and
wherein the driving controller is configured to receive the third sensing data from the data driver, to calculate a mobility value of the driving transistor of each of the pixels, and to compensate the input image data based on the mobility value and the threshold voltage value.