公开(公告)号：US11201197B2

公开(公告)日：2021-12-14

申请号：US16526045

申请日：2019-07-30

Applicant: LG Display Co., Ltd.

Inventor： Hyeong-Jun Lim ,  Doo-Hyn Yoon ,  Han-Sun Park

IPC: H01L27/32 ,  H01L51/56 ,  G02B27/01 ,  G06F1/16

Abstract: A display device includes: a substrate; a plurality of pixels on the substrate; an insulating film on the substrate; a bank on the insulating film, wherein the bank partitions the plurality of pixels; a first trench in the bank; and a second trench in the insulating film. A method of manufacturing a display device includes: forming a first lower metal layer and a second metal layer in patterns on a substrate; forming a first insulating film on the first lower metal layer and the second lower metal layer; forming a second insulating film on the first insulating film; forming a first trench to expose the second lower metal layer by performing a first etching process; and forming a second trench by performing a second etching process to etch the second lower metal layer exposed from a bottom of the first trench.