US 12,254,821 B2
Gate driving circuit and micro-led display device including the same
Sujin Hwang, Paju-si (KR); and Miyoung Son, Goyang-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Jan. 5, 2024, as Appl. No. 18/405,527.
Claims priority of application No. 10-2023-0012130 (KR), filed on Jan. 30, 2023.
Prior Publication US 2024/0257715 A1, Aug. 1, 2024
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0408 (2013.01); G09G 2310/0267 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A micro-LED display device comprising:
a display panel including an array of a plurality of pixels,
a first switch line and a second switch line disposed in the display panel,
wherein each of the plurality of pixels includes:
a micro-LED;
a sub-pixel circuit configured to cause the micro-LED to emit light; and
a Gate In Active (GIA) circuit configured to provide a scan signal to the sub-pixel circuit,
wherein the GIA circuit includes at least one gate driver configured to be enabled or disabled based on a first selection signal transmitted from the first switch line,
wherein the GIA circuit further includes at least one redundant gate driver configured to be enabled or disabled based on a second selection signal transmitted from the second switch line, and
wherein the redundant gate driver is enabled when the gate driver is disabled,
wherein the at least one gate driver comprises:
a pull-up transistor configured to pull up an output end in response to a signal of a QB node;
a pull-down transistor configured to pull down the output end according to a clock signal in response to a signal of a Q node;
a first switch connected between the QB node and a high-potential voltage terminal and configured to transmit a high-potential voltage to the QB node in response to the first selection signal; and
a second switch connected between the Q node and the high-potential voltage terminal and configured to transmit the high-potential voltage to the Q node in response to the first selection signal.