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:
May. 16, 2006
Filed:
Feb. 24, 2005
Masaya Nakayama, Kawasaki, JP;
Yuichiro Itai, Kawasaki, JP;
Masaru Kinoshita, Kawasaki, JP;
Jun Kodama, Kawasaki, JP;
Masaya Nakayama, Kawasaki, JP;
Yuichiro Itai, Kawasaki, JP;
Masaru Kinoshita, Kawasaki, JP;
Jun Kodama, Kawasaki, JP;
Fuji Photo Film Co., Ltd., Tokyo, JP;
Abstract
An organic EL device includes a transparent substrate (), an anode (), a hole injection layer (), a hole transport layer (), an luminescent layer (), an electron transport multilayered body (), a cathode-side electron transport layer (), and a cathode () formed on the substrate () in that order. The electron transport multilayered body () includes alternate layered two kinds of electron transport layers (A,B) having electron affinities that are different from each other. Increasing the amount of electron current injected from the cathode () for balancing with the amount of hole current, and enhancing luminous efficiency.