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. 17, 2001
Filed:
Jun. 25, 1999
TDK Corporation, Tokyo, JP;
Abstract
The object of the invention is to provide an organic EL device which possesses the merits of both an organic material and an inorganic material, has high efficiency and an extended life, and can be fabricated at low cost. This object is achieved by the provision of an organic EL device comprising a hole injecting electrode, an electron injecting electrode and an organic layer interleaved between these electrodes and including at least a light emitting layer. A high-resistance inorganic electron transporting layer is interleaved between the light emitting layer and the electron injecting electrode and includes a conduction path for blocking holes and transporting electrons. An organic electron injecting layer is interleaved between the high-resistance inorganic electron transporting layer and the electron injecting electrode.