US 12,490,470 B2
Thin-film transistor, thin-film transistor array substrate, and method for manufacturing thin-film transistor
Kyoung Won Lee, Seoul (KR); Eun Hye Ko, Yongin-si (KR); Yeon Hong Kim, Hwaseong-si (KR); Eun Hyun Kim, Suwon-si (KR); Hyung Jun Kim, Seoul (KR); Sun Hee Lee, Seoul (KR); and Jun Hyung Lim, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jul. 21, 2022, as Appl. No. 17/870,805.
Claims priority of application No. 10-2021-0160600 (KR), filed on Nov. 19, 2021.
Prior Publication US 2023/0163217 A1, May 25, 2023
Int. Cl. H10D 30/67 (2025.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01); H10D 99/00 (2025.01)
CPC H10D 30/6755 (2025.01) [H10D 86/411 (2025.01); H10D 86/423 (2025.01); H10D 86/60 (2025.01); H10D 99/00 (2025.01)] 21 Claims
OG exemplary drawing
 
1. A thin-film transistor comprising:
a light-shielding layer disposed on a substrate;
an oxygen supply layer disposed on the light-shielding layer, wherein the oxygen supply layer includes a metal oxide, and the light-shielding layer and the oxygen supply layer have a same patterned shape as each other in a plan view;
a buffer layer disposed on the substrate and covering the oxygen supply layer;
an active layer disposed on the buffer layer, wherein the active layer includes a channel area overlapping the light-shielding layer, and a first electrode area and a second electrode area respectively in contact with opposing sides of the channel area;
a gate insulating layer disposed on the channel area of the active layer;
a gate electrode disposed on the gate insulating layer;
an interlayer insulating layer disposed on the buffer layer and covering the active layer and the gate electrode, wherein a first electrode hole is defined through the interlayer insulating layer to overlap a portion of the first electrode area of the active layer; and
a first electrode disposed on the interlayer insulating layer and connected to the first electrode area of the active layer via the first electrode hole.