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.:
Date of Patent:
Jun. 16, 2015
Filed:
Dec. 12, 2013
Applicant:
Panasonic Corporation, Osaka, JP;
Inventors:
Hirofumi Fujita, Ehime, JP;
Satoru Ohuchi, Osaka, JP;
Shinya Fujimura, Osaka, JP;
Yoshiaki Tsukamoto, Osaka, JP;
Assignee:
JOLED INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/08 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5012 (2013.01); H01L 51/5088 (2013.01); H01L 2251/552 (2013.01); H01L 51/5004 (2013.01);
Abstract
An organic EL element comprises: an anode; a cathode; a buffer layer; and a hole injection layer between the anode and the buffer layer. The hole injection layer includes a nickel oxide that includes both nickel atoms with a valence of three and nickel atoms with a valence of two. At least part of the hole injection layer has a crystal structure ANiOthat includes nickel, a metal element A, and oxygen, the nickel including nickel atoms with a valence of three, and the metal element A differing from nickel and including metal A atoms with a valence of three.