US 11,856,820 B2
Display apparatus and method of manufacturing the same
Seongkweon Heo, Yongin-si (KR); and Chungi You, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Dec. 28, 2020, as Appl. No. 17/135,823.
Claims priority of application No. 10-2020-0000491 (KR), filed on Jan. 2, 2020.
Prior Publication US 2021/0210572 A1, Jul. 8, 2021
Int. Cl. H01L 27/32 (2006.01); H10K 59/123 (2023.01); H10K 59/00 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01)
CPC H10K 59/123 (2023.02) [H10K 59/00 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02)] 12 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a semiconductor layer on a substrate;
a gate insulating layer on the substrate and covering the semiconductor layer;
a gate electrode on the gate insulating layer and at least partially overlapping the semiconductor layer;
a first interlayer insulating layer on the gate electrode;
a second interlayer insulating layer on the first interlayer insulating layer;
an electrode layer on the second interlayer insulating layer and extending from a top surface of the second interlayer insulating layer to the semiconductor layer to be electrically connected to the semiconductor layer;
a pixel electrode disposed on the second interlayer insulating layer and electrically connected to the electrode layer; and
a pixel-defining layer disposed on an edge of the pixel electrode and exposing a center of the pixel electrode,
wherein the second interlayer insulating layer comprises:
a first portion;
a second portion extending from the first portion and vertically overlapping with the center of the pixel electrode; and
a third portion extending from the first portion and vertically overlapping with the pixel-defining layer,
the electrode layer is on the first portion of the second interlayer insulating layer,
a first step is provided by a difference in thicknesses of the first portion and the second portion,
a second step is provided by a difference in thicknesses of the first portion and the third portion, and
the second step is greater than the first step.