Light-emitting element, light-emitting device, and manufacturing method of light-emitting element

Patent metadata

Field	Value
Publication number	US-9105879-B2
Application number	US-201414185508-A
Country	US
Kind code	B2
Filing date	Feb 20, 2014
Priority date	Mar 11, 2011
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

Provided is a highly reliable light-emitting element in which damage to an EL layer is reduced even when an auxiliary electrode for an upper electrode is provided. Further, a highly reliable light-emitting device in which luminance unevenness is suppressed is provided. The light-emitting element includes a first electrode; an insulating layer over the first electrode; an auxiliary electrode having a projection and a depression on a surface, over the insulating layer; a layer containing a light-emitting organic compound over the first electrode and the auxiliary electrode; and a second electrode over the layer containing the light-emitting organic compound. At least part of the auxiliary electrode is electrically connected to the second electrode.

First claim

The invention claimed is:

1. A method for manufacturing a light-emitting element, comprising the steps of:
forming a first electrode over a substrate;
forming an auxiliary wiring over the first electrode;
forming an insulating layer over the auxiliary wiring;
printing an auxiliary electrode comprising a conductive paste including metal particles over the insulating layer;
forming a layer containing a light-emitting organic compound over the first electrode and the auxiliar…

Assignees

• Semiconductor Energy Lab

Inventors

• Yokoyama Kohei
• Ikeda Hisao

Classifications

• H10K59/80516

  Electricity · mapped topic

• H10K71/00

  Electricity · mapped topic

• H10K59/80522 Primary

  Electricity · mapped topic

• H01L51/5228

  Electricity · mapped topic

• H01L2251/5315

  Electricity · mapped topic