US 12,249,286 B2
Display device and driving method
Insu Hwang, Seoul (KR); DongYoon Lee, Seoul (KR); and Kimin Son, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 18, 2023, as Appl. No. 18/543,637.
Claims priority of application No. 10-2022-0190651 (KR), filed on Dec. 30, 2022.
Prior Publication US 2024/0221673 A1, Jul. 4, 2024
Int. Cl. G09G 3/3258 (2016.01); H10K 59/131 (2023.01)
CPC G09G 3/3258 (2013.01) [H10K 59/131 (2023.02); G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/021 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device comprising:
a light emitting element configured to emit light;
a driving transistor including a gate electrode at a first node, a first electrode connected to a third node, and a second electrode connected to the light emitting element at a second node, the driving transistor configured to drive the light emitting element;
a scanning transistor electrically connected between the gate electrode of the driving transistor at the first node and a data line, the scanning transistor including a gate electrode; and
a sensing transistor electrically connected between the second electrode of the driving transistor at the second node and a reference voltage line, the sensing transistor including a gate electrode;
wherein a period during which a characteristic value of the sensing transistor is sensed includes a voltage control period, a voltage tracking period after the voltage control period, and a sampling period after the voltage tracking period, and
during the voltage control period, a first sensing voltage is supplied to the data line, a second sensing voltage is supplied to the first electrode of the driving transistor at the third node, a third sensing voltage is supplied to the gate electrode of the scanning transistor and the gate electrode of the sensing transistor, and a fourth sensing voltage is supplied to the reference voltage line,
wherein the voltage tracking period includes a first tracking period, a second tracking period after the first tracking period, and a third tracking period after the second tracking period.