US 12,469,462 B2
Gate driving circuit
Kyungho Kim, Yongin-si (KR); Sangyong No, Yongin-si (KR); and Gichang Lee, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Feb. 8, 2024, as Appl. No. 18/436,904.
Claims priority of application No. 10-2023-0039089 (KR), filed on Mar. 24, 2023; and application No. 10-2023-0103701 (KR), filed on Aug. 8, 2023.
Prior Publication US 2024/0321215 A1, Sep. 26, 2024
Int. Cl. G09G 3/3266 (2016.01); G09G 3/3233 (2016.01); H03K 17/687 (2006.01)
CPC G09G 3/3266 (2013.01) [G09G 3/3233 (2013.01); H03K 17/6871 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/061 (2013.01); G09G 2310/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gate driving circuit comprising a plurality of stages each comprising:
a first control circuit connected to a first voltage input terminal receiving a first voltage and a second voltage input terminal receiving a second voltage lower than the first voltage, the first control circuit being configured to control voltage levels of a first control node and a second control node;
a first output circuit connected to a first clock terminal and a third voltage input terminal receiving a third voltage, the first output circuit being configured to output a gate signal according to the voltage levels of the first control node and the second control node; and
a second output circuit connected to a second clock terminal and the second voltage input terminal, the second output circuit being configured to output a carry signal according to the voltage levels of the first control node and the second control node,
wherein the first control circuit comprises:
a first transistor connected to a first input terminal and the first control node, a gate of the first transistor being connected to the first input terminal; and
a second transistor connected to the first input terminal and the first control node, a gate of the second transistor being connected to a second input terminal,
wherein the second transistor comprises a first sub-transistor and a second sub-transistor that are connected in series, the first input terminal is connected to an output terminal of the second output circuit of a previous stage, and the second input terminal is connected to the output terminal of the second output circuit of a next stage,
wherein the second voltage is lower than the third voltage.