US 12,295,230 B2
Display apparatus having a light-emitting device and a driving circuit
Gi Sang Hong, Seoul (KR); and Young Wook Lee, Seoul (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 21, 2022, as Appl. No. 17/845,800.
Claims priority of application No. 10-2021-0091739 (KR), filed on Jul. 13, 2021.
Prior Publication US 2023/0013464 A1, Jan. 19, 2023
Int. Cl. H10K 59/131 (2023.01); G09G 3/3233 (2016.01); H10K 59/12 (2023.01); H10K 59/121 (2023.01); H10K 71/00 (2023.01)
CPC H10K 59/1315 (2023.02) [G09G 3/3233 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0842 (2013.01); H10K 59/1201 (2023.02); H10K 59/1216 (2023.02); H10K 71/00 (2023.02)] 26 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a separation insulating layer on a device substrate;
a first thin film transistor on the device substrate, the first thin film transistor including a first semiconductor pattern between the device substrate and the separation insulating layer;
a second thin film transistor on the separation insulating layer, the second thin film transistor including a second semiconductor pattern being made of a different material from the first semiconductor pattern;
a storage capacitor including a first capacitor electrode and a second capacitor electrode, which are sequentially stacked on the separation insulating layer;
an over-coat layer on the first thin film transistor, the second thin film transistor, and the storage capacitor; and
a light-emitting device on the over-coat layer, the light-emitting device being electrically connected to the second thin film transistor,
wherein the first capacitor electrode has a stacked structure of a first electrode layer including the same material as the second semiconductor pattern and a second electrode layer including a material having a lower resistance than the first electrode layer.