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:
Jul. 15, 2014
Filed:
Jan. 30, 2012
Applicants:
Keiko Kurata, Hyogo, JP;
Seiji Nishiyama, Osaka, JP;
Takashi Isobe, Nara, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); H01L 51/52 (2006.01); H05B 33/14 (2006.01); H01L 27/32 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5265 (2013.01); H05B 33/14 (2013.01); H01L 27/322 (2013.01); H01L 2251/558 (2013.01);
Abstract
A light-emitting element that has an improved light-extraction efficiency and an improved color purity of an emitted light. A light-emitting element includes a reflective electrode, a transparent electrode, a light-emitting layer, a functional layer, and a color filter. An optical film thickness of the functional layer is from approximately 218 nm to approximately 238 nm for a light emitting element that emits a blue light. An optical film thickness of the functional layer is from approximately 384 nm to approximately 400 nm for a light emitting element that emits a red light.