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:
Aug. 18, 2015
Filed:
Mar. 01, 2012
Applicant:
Masayuki Mitsuya, Chino, JP;
Inventor:
Masayuki Mitsuya, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/18 (2006.01); H01L 51/50 (2006.01); H01L 27/32 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5044 (2013.01); H01L 27/322 (2013.01); H01L 51/0059 (2013.01); H01L 51/0072 (2013.01); H01L 51/0085 (2013.01); H01L 2251/5376 (2013.01); H01L 2251/552 (2013.01);
Abstract
A light-emitting device includes an anode, a cathode, a first phosphorescent layer and a fluorescent layer that are provided between the anode and the cathode and emit phosphorescent light and fluorescent light, respectively, upon energization of the anode and the cathode, and an intermediate layer provided between the first phosphorescent layer and the fluorescent layer, the intermediate layer including a hole transport layer and an electron transport layer that are in contact with each other, the electron transport layer being located on the anode side, the hole transport layer being located on the cathode side.