US 12,002,395 B2
Display apparatus and method of driving the same
Seokha Hong, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Oct. 5, 2021, as Appl. No. 17/494,792.
Claims priority of application No. 10-2020-0174800 (KR), filed on Dec. 14, 2020.
Prior Publication US 2022/0208054 A1, Jun. 30, 2022
Int. Cl. G09G 3/20 (2006.01); G06F 3/14 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/20 (2013.01) [G06F 3/1446 (2013.01); G06F 3/1423 (2013.01); G09G 3/3233 (2013.01); G09G 2300/026 (2013.01); G09G 2300/043 (2013.01); G09G 2310/0272 (2013.01); G09G 2330/021 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a plurality of display panels;
a current sensor configured to sense a current of each of the display panels;
a driving controller configured to generate a compensation value of each of the display panels based on the current of each of the display panels and to generate a data signal of each of the display panels based on the compensation value;
a data driver configured to convert the data signal into a data voltage and to output the data voltage to each of the display panels;
a switch including a first end connected to the current sensor and a second end directly connected to the display panel to sense the current of the display panel;
a first power supply line configured to supply a power to a first display panel of the display panels;
a first switch connected to the first power supply line;
a second power supply line configured to supply a power to a second display panel of the display panels;
a second switch connected to the second power supply line;
a third power supply line configured to supply a power to a third display panel of the display panels;
a third switch connected to the third power supply line;
a fourth power supply line configured to supply a power to a fourth display panel of the display panels; and
a fourth switch connected to the fourth power supply line,
wherein the first switch, the second switch, the third switch and the fourth switch are turned on in a non-sensing period,
wherein the first switch is turned off and the second switch, the third switch and the fourth switch are turned on in a first duration of a sensing period,
wherein the second switch is turned off and the first switch, the third switch and the fourth switch are turned on in a second duration of the sensing period,
wherein the third switch is turned off and the first switch, the second switch and the fourth switch are turned on in a third duration of the sensing period,
wherein the fourth switch is turned off and the first switch, the second switch and the third switch are turned on in a fourth duration of the sensing period, and
wherein the first, second, third, and fourth durations of the sensing period are contiguous periods that abut each other such that a beginning of the second duration abuts an end of the first duration, a beginning of the third duration abuts an end of the second duration, and a beginning of the fourth duration abuts an end of the third duration.