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. 26, 2001
Filed:
Jun. 25, 1999
TDK Corporation, Tokyo, JP;
Abstract
The object of the invention is to provide a high-efficiency, long-life yet low-cost organic EL device which possesses the merits of both an organic material and an inorganic material. This object is achieved by the provision of an organic EL device which comprises a hole injecting electrode and an electron injecting electrode between which an organic layer having at least a light emitting layer is provided, an inorganic insulating electron transporting layer provided between the light emitting layer and the electron injecting layer, a hole injecting and transporting layer provided between the light emitting layer and the hole injecting electrode, and an organic electron injecting layer provided between the inorganic insulating electron transporting layer and the electron injecting layer.