公开(公告)号：US09685622B2

公开(公告)日：2017-06-20

申请号：US14673057

申请日：2015-03-30

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki-Woog Song ,  Sung Hoon Pieh ,  Youn Seok Kam ,  Tae Shick Kim ,  Se Ung Kim ,  Hyung June Kim

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/504 ,  H01L51/5044 ,  H01L51/5265

Abstract: Discussed is a white organic light emitting device for enhancing emission efficiency and panel efficiency. The white organic light emitting device can include a first emission part between a first electrode and a second electrode and configured to include a first emission layer (EML), a second emission part on the first emission part and configured to include a second EML, and a third emission part on the second emission part and configured to include a third EML. The first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs.