公开(公告)号：US09947738B2

公开(公告)日：2018-04-17

申请号：US14969439

申请日：2015-12-15

Applicant: JOLED INC.

Inventor： Tetsuro Kondoh ,  Toshiaki Onimaru ,  Makoto Kimura ,  Kazuhiro Kobayashi ,  Yoshiki Hayashida

IPC: H01L29/08 ,  H01L27/32

CPC classification number: H01L27/3276 ,  H01L27/3246 ,  H01L27/3262

Abstract: A display panel including: a substrate; a multi-layer wiring layer disposed over the substrate and including a first power line and a second power line; organic electroluminescence elements over the multi-layer wiring layer; a partition wall over the multi-layer wiring layer; and a member over the multi-layer wiring layer, a height of the member from the substrate being greater than a height of the partition wall from the substrate, wherein the multi-layer wiring layer includes a first portion and a second portion, the organic electroluminescence elements are arrayed on the first portion, in the second portion, the first power line and the second power line intersect, and the member is positioned on the second portion without overlapping at least one of the first power line and the second power line in plan view of the substrate.

公开(公告)号：US09748509B2

公开(公告)日：2017-08-29

申请号：US14903097

申请日：2014-07-03

Applicant: JOLED INC.

Inventor： Yoshiki Hayashida ,  Takayuki Shimamura ,  Jun Hashimoto ,  Makoto Kimura ,  Hiroyuki Masuda

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5076 ,  H01L51/5253

Abstract: An organic electroluminescence (EL) element that has an anode; a cathode; an organic light-emitting layer between the anode and the cathode that emits light according to recombination of holes injected from the anode and electrons injected from the cathode; and an electron transport layer between the cathode and the organic light-emitting layer that transports electrons from the cathode to the organic light-emitting layer. The electron transport layer includes an n-type dopant that includes an electron-donating substance, the electron transport layer being doped with the n-type dopant at a doping concentration that is higher than a doping concentration at which light emittance efficiency of the organic light-emitting layer is greatest.