US 12,462,740 B2
Gate driver, display device including the same, and electronic apparatus including the same
Eok Su Kim, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Nov. 26, 2024, as Appl. No. 18/961,378.
Claims priority of application No. 10-2024-0016517 (KR), filed on Feb. 2, 2024.
Prior Publication US 2025/0252901 A1, Aug. 7, 2025
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2310/0267 (2013.01); G09G 2310/0275 (2013.01); G09G 2310/0291 (2013.01); G09G 2310/061 (2013.01); G09G 2310/08 (2013.01); G09G 2330/021 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A gate driver comprising a plurality of stages, each stage of the plurality of stages comprising:
a first pull-up control circuit configured to apply a previous carry signal among carry signals of previous stages to a first control node in response to the previous carry signal;
a buffer circuit configured to output a gate clock signal as a gate output signal in response to a signal of the first control node; and
a pull-down circuit configured to output a second low voltage as the gate output signal in response to a first subsequent carry signal among carry signals of subsequent stages,
wherein the first pull-up control circuit comprises:
a 4-1st transistor comprising a control electrode configured to receive the previous carry signal, a first electrode configured to receive the previous carry signal, and a second electrode connected to a second control node;
a 4-2nd transistor comprising a control electrode configured to receive the previous carry signal, a first electrode connected to the second control node, and a second electrode connected to the first control node; and
a hold capacitor comprising a first electrode connected to the second control node and a second electrode configured to receive a constant voltage.