公开(公告)号：US20230397477A1

公开(公告)日：2023-12-07

申请号：US18118865

申请日：2023-03-08

Applicant: Samsung Display Co., LTD.

Inventor： Chang Ho YI ,  Hyun Min CHO ,  Jung Woo HA ,  Tetsuhiro TANAKA ,  Seok Je SEONG

IPC: H01L51/00 ,  H01L29/423 ,  H01L29/786

CPC classification number: H10K59/8792 ,  H01L29/42384 ,  H10K59/1213 ,  H10K59/1216 ,  H01L29/78633 ,  H01L29/7869

Abstract: A display device includes a semiconductor layer on an opposite side to a light-blocking layer, the semiconductor layer including an active layer overlapping the light-blocking layer, a first gate insulator on an opposite side to a buffer film with the active layer therebetween, and a first gate electrode on an opposite side to the active layer with the first gate insulator therebetween, a side surface of the first gate insulator includes a first inclined portion contacting a first surface of the semiconductor layer, and a second inclined portion contacting the first inclined portion and the first gate electrode, and a first angle between the first surface of the semiconductor layer and the first inclined portion is less than a second angle between the first surface of the semiconductor layer and the second inclined portion.