公开(公告)号：US10164211B2

公开(公告)日：2018-12-25

申请号：US15703329

申请日：2017-09-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Namkook Kim ,  Soonsung Yoo ,  Taejoon Song ,  Jungeun Lee ,  Shinbok Lee ,  Kyungha Lee

IPC: H01L51/56 ,  H01L51/00 ,  H01L51/52

Abstract: According to the present disclosure, an organic light emitting material and a metal may be entirely deposited on a substrate without using an open mask to form an organic light emitting device, thereby facilitating application to a roll fabrication apparatus. A side surface of an organic light emitting layer may be exposed to the outside, but a step structure may be formed on an outer portion of the substrate, and the organic light emitting layer is disconnected between an outer region and a lighting region by the step of the step structure, thereby preventing moisture that penetrates into the organic light emitting layer in the outer region from being propagated to the organic light emitting layer in the lighting region.