US 11,869,415 B2
Sweep signal driver and display device including the same
Hyun Joon Kim, Hwaseong-si (KR); Jung Hwan Hwang, Seongnam-si (KR); Kyung Hoon Chung, Yongin-si (KR); and Jun Ki Jeong, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Apr. 13, 2022, as Appl. No. 17/719,930.
Claims priority of application No. 10-2021-0126468 (KR), filed on Sep. 24, 2021.
Prior Publication US 2023/0107775 A1, Apr. 6, 2023
Int. Cl. G09G 3/32 (2016.01); H03K 17/687 (2006.01)
CPC G09G 3/32 (2013.01) [H03K 17/6871 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01); G09G 2320/064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sweep signal driver comprising:
a plurality of stages configured to sequentially output emission signals to emission lines, and sequentially output sweep signals to sweep signal lines,
wherein the plurality of stages comprises a kth stage configured to output a kth emission signal to a kth emission line, and output a kth sweep signal to a kth sweep signal line, where k is a natural number, the kth stage comprising:
a first pull-up node;
a second pull-up node;
a third pull-up node;
a node connection circuit between the first pull-up node and the second pull-up node, and between the first pull-up node and the third pull-up node;
a first output circuit configured to output a sweep clock signal of a sweep clock terminal to a first output terminal connected to the kth sweep signal line when the third pull-up node has a gate-on voltage; and
a second output circuit configured to output a gate-on voltage to a second output terminal connected to the kth emission line when the second pull-up node has a gate-on voltage, and
wherein a pulse of the kth sweep signal linearly changes from a gate-off voltage to the gate-on voltage.