US 12,437,691 B1
Scan driver
Hai Jung In, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Feb. 23, 2023, as Appl. No. 18/113,538.
Claims priority of application No. 10-2022-0110110 (KR), filed on Aug. 31, 2022.
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/20 (2013.01) [G09G 2310/0289 (2013.01); G09G 2310/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A scan driver comprising:
a plurality of stage groups configured to supply scan signals to scan lines based on clock signals, carry clock signals, a first power, and a second power,
wherein a first stage group of the stage groups comprises:
a first stage configured to supply a first scan signal to a first scan line based on an input signal, a first clock signal of the clock signals, a first carry clock signal of the carry clock signals, the first power, and the second power; and
a second stage configured to supply a second scan signal to a second scan line based on the input signal, a second clock signal of the clock signals, a second carry clock signal of the carry clock signals, the first power, and the second power, and
the first stage and the second stage are commonly connected to a first node and a second node, wherein the first stage comprises:
a first input unit configured to control a voltage of a third node based on the input signal and the second power;
a first output unit configured to output the first scan signal based on a voltage of the first node, a voltage of the second node, the voltage of the third node, the first clock signal, and the first power; and
a second output unit configured to output a first carry signal based on the voltage of the first node, the voltage of the second node, the voltage of the third node, the first carry clock signal, and the second power, and the second stage comprises:
a second input unit configured to control a voltage of a fourth node based on the input signal and the second power;
a third output unit configured to output the second scan signal based on the voltage of the first node, the voltage of the second node, the voltage of the fourth node, the second clock signal, and the first power; and
a fourth output unit configured to output a second carry signal based on the voltage of the first node, the voltage of the second node, the voltage of the fourth node, the second carry clock signal, and the second power.