Organic electroluminescent device

US6262433A · kind A · utility

Assignee

• TDK CORPORATION · JP

Inventors

• Michio Arai · Akaiwa, JP
• Isamu Kobori · Ibaraki, JP
• Etsuo Mitsuhashi · Tokyo, JP

Key dates

• Filing date: Jun 25, 1999
• Grant date: Jul 17, 2001
• Expiry date: Jun 25, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/8428

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.