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. 15, 2010
Filed:
Nov. 01, 2007
Seishi Miura, Sagamihara, JP;
Naoyuki Ito, Yokohama, JP;
Yojiro Matsuda, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An organic light emitting apparatus comprising a substrate and a plurality of organic light emitting devices having different emission colors to each other formed on the substrate, each of the plurality of organic light emitting devices including a cathode, an electron injection layer which is in contact with the cathode, organic compound layers including a light emitting layer, and an optically-transparent anode, the electron injection layer including an organic compound and at least one of an alkali metal, an alkaline earth metal, an alkali metal compound, and an alkaline earth metal compound. The electron injection layer has a thickness adjusted for each of the different emission colors so that each of the plurality of organic light emitting devices having the different emission colors enhances light emitted from the light emitting layer.