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:
Mar. 24, 2015
Filed:
Mar. 09, 2012
Hiroyuki Sasaki, Osaka, JP;
Hirofumi Kubota, Osaka, JP;
Hiroyuki Sasaki, Osaka, JP;
Hirofumi Kubota, Osaka, JP;
Abstract
The objective of the present invention is to propose an organic electroluminescent element capable of realizing lighting with which a person feels comfortable irrespective of change in luminance of emitted light. The organic electroluminescent element according to the present invention is constituted by a plurality of layers stacked. The organic electroluminescent element has such characteristics that, in a range of 100 cd/mto 6000 cd/minclusive, a color temperature of emitted light increases with an increase in luminance of the emitted light in a direction identical to a direction in which the plurality of layers are stacked.