US 11,862,104 B2
Gate driver and display device including the same
Seung Ho Heo, Paju-si (KR); and Hun Ki Shin, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Sep. 27, 2022, as Appl. No. 17/954,284.
Claims priority of application No. 10-2021-0133836 (KR), filed on Oct. 8, 2021; and application No. 10-2021-0174802 (KR), filed on Dec. 8, 2021.
Prior Publication US 2023/0112514 A1, Apr. 13, 2023
Int. Cl. G09G 3/3266 (2016.01); G09G 3/3233 (2016.01); G09G 3/3291 (2016.01)
CPC G09G 3/3266 (2013.01) [G09G 3/3291 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/0278 (2013.01)] 25 Claims
OG exemplary drawing
 
1. Agate driver, comprising:
a controller configured to charge and discharge a first control node that pulls up an output voltage and a second control node that pulls down the output voltage;
a first output unit including a first pull-up transistor configured to apply a gate high voltage to a first output node in response to a charging voltage of the first control node, and a first pull-down transistor configured to apply a gate low voltage to the first output node in response to a charging voltage of the second control node; and
a switch unit configured to change a current path between the first output node and a first power line to which a high potential voltage is applied or a second power line to which a first clock signal is applied according to a carry signal transmitted from a signal transmission unit of a previous stage and a voltage level of the second control node.