US 12,414,449 B2
Display device comprising a contact hole that contacts multiple layers
SeonWoo Lee, Uiwang-si (KR); Hana Jung, Seoul (KR); and Geondo Park, Paju-si (KR)
Assigned to LG Display Co., Ltd., (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Aug. 29, 2022, as Appl. No. 17/897,469.
Claims priority of application No. 10-2021-0192151 (KR), filed on Dec. 30, 2021.
Prior Publication US 2023/0217739 A1, Jul. 6, 2023
Int. Cl. H01L 29/08 (2006.01); H10K 59/121 (2023.01); H10K 59/126 (2023.01); H10K 59/131 (2023.01); H10D 30/67 (2025.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01)
CPC H10K 59/131 (2023.02) [H10K 59/1213 (2023.02); H10K 59/1216 (2023.02); H10K 59/126 (2023.02); H10D 30/6723 (2025.01); H10D 30/6755 (2025.01); H10D 86/423 (2025.01); H10D 86/481 (2025.01); H10D 86/60 (2025.01)] 13 Claims
OG exemplary drawing
 
1. A display device, comprising:
a substrate;
a first conductive layer disposed on the substrate;
a buffer layer disposed on the first conductive layer;
a first semiconductor layer disposed on the buffer layer;
a gate insulating layer disposed on the first semiconductor layer and the buffer layer;
a second conductive layer disposed on the gate insulating layer;
a driving transistor, a switching transistor, a sensing transistor, and a storage capacitor disposed on the substrate; and
a light emitting diode electrically connected to the driving transistor,
wherein an active layer of the driving transistor and an active layer of the sensing transistor are connected with each other,
wherein the second conductive layer is in contact with the first conductive layer and the first semiconductor layer through a first contact hole in the buffer layer and the gate insulating layer.