公开(公告)号：US20210066672A1

公开(公告)日：2021-03-04

申请号：US16742420

申请日：2020-01-14

Applicant: Shanghai AVIC OPTO Electronics Co., Ltd.

Inventor： Wenjun DAI

IPC: H01L51/56 ,  H01L51/52 ,  G02F1/1339 ,  H01L27/32 ,  G02F1/1362

Abstract: Disclosed are a display panel, a preparation method thereof and a display device. The display panel includes a display region and a non-display region. The preparation method includes: providing a base substrate; preparing a first metal layer on a side of the base substrate; preparing a first insulation layer on a side of the first metal layer; performing a patterning process on the first insulation layer by using a mask plate to form a plurality of first via holes; preparing a passivation layer on a side of the first insulation layer; performing the patterning process on the passivation layer by using the same mask plate to form a plurality of second via holes, where a vertical projection of each of the first via holes on a plane where the base substrate is located covers a vertical projection of one of the second via holes on the plane.