US 12,260,823 B2
Pixel circuit and display device including the same
Dong Kyu Lee, Paju-si (KR); and Seung Tae Jin, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Dec. 7, 2023, as Appl. No. 18/532,843.
Claims priority of application No. 10-2022-0183112 (KR), filed on Dec. 23, 2022.
Prior Publication US 2024/0212617 A1, Jun. 27, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2320/0233 (2013.01); G09G 2358/00 (2013.01); G09G 2380/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a capacitor coupled between a first node and a second node;
a driving element including a first electrode connected to a first constant voltage node, a gate electrode connected to the second node, and a second electrode connected to a third node;
a light emitting element including an anode electrode connected to a fourth node and a cathode electrode connected to a second constant voltage node;
a first switch element connected between the second node and the third node;
a second switch element connected between a data line to which a data voltage is applied and the first node;
a third switch element connected between the fourth node and the second constant voltage node or between the fourth node and a fourth constant voltage node;
a fourth switch element connected between the first node and a third constant voltage node;
a fifth switch element connected between the second node and the third constant voltage node or between the first node and the second node; and
a sixth switch element connected between the third node and the fourth node,
wherein the third switch element is turned on in response to the gate-on voltage of a first scan signal to connect the fourth node to the second constant voltage node, or to connect the fourth node to the fourth constant voltage nodes during an initialization period and a sensing period among a driving period of the pixel circuit including an initialization period, a sensing period, and a light emission period.