公开(公告)号：US20190181360A1

公开(公告)日：2019-06-13

申请号：US16202595

申请日：2018-11-28

Applicant: Samsung Display Co., Ltd.

Inventor： Myounggeun CHA ,  Sanggun CHOI ,  Meejae KANG ,  Sanggab KIM ,  Joon woo BAE ,  Thanh Tien NGUYEN ,  Kyoungwon LEE ,  Yongsu LEE

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/52 ,  H01L51/50 ,  H01L51/56

Abstract: A display substrate includes a first conductive layer on a base substrate, a first insulation layer on the first conductive layer, a second conductive layer on the first insulation layer, a second insulation layer on the second conductive layer, and a third conductive layer on the second insulation layer. The third conductive layer is connected to the first conductive layer and the second conductive layer through a contact hole passing through the first insulation layer, the second conductive layer, and the second insulation layer. A sidewall of the contact hole has a stepped shape.