logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10230065 B1

PDFFull Text
Date of Patent:
Mar. 12, 2019

Filed:

Jun. 03, 2015

Organic el element having reflective interface transport layers

Applicant:

Sharp Kabushiki Kaisha, Sakai, Osaka, JP;

Inventors:

Yoshiyuki Isomura, Sakai, JP;

Katsuhiro Kikuchi, Sakai, JP;

Shinichi Kawato, Sakai, JP;

Hideki Uchida, Sakai, JP;

Manabu Niboshi, Sakai, JP;

Satoshi Inoue, Sakai, JP;

Yuto Tsukamoto, Sakai, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Ida M Soward

Int. Cl.
CPC ...
H01L 51/00 (2006.01); H01L 51/50 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H01L 27/32 (2006.01);
U.S. Cl.
CPC ...
H01L 51/504 (2013.01); H01L 51/002 (2013.01); H01L 51/0026 (2013.01); H01L 51/506 (2013.01); H01L 51/508 (2013.01); H01L 51/5064 (2013.01); H01L 51/5076 (2013.01); H01L 51/5218 (2013.01); H01L 51/5271 (2013.01); H01L 51/56 (2013.01); H01L 27/322 (2013.01); H01L 27/3211 (2013.01); H01L 51/5012 (2013.01); H01L 51/5052 (2013.01); H01L 51/5056 (2013.01); H01L 51/5068 (2013.01); H01L 51/5084 (2013.01); H01L 51/5265 (2013.01);
Abstract

In an organic EL element equipped with an anode, a cathode, a luminescent layer, and an electron transport layer, the cathode includes a reflecting electrode. The electron transport layer includes a doped electron transport layer to which an n-type dopant material is added and a non-doped electron transport layer to which an n-type dopant material is not added. A first reflection surface that reflects light from the luminescent layer is provided at an interface between the doped electron transport layer and the non-doped electron transport layer.

Find Patent Forward Citations

Loading…