Organic electroluminescent device

US6252246A · 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: Jun 26, 2001
• Expiry date: Jun 25, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/171

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.