Organic electroluminescent display

US7012364B2 · kind B2 · utility

Assignees

• Dai Nippon Printing Co., Ltd. · JP
• Junji Kido · JP

Inventors

• Toshitaka Mori · Oshima, JP
• Yasuyuki Ohyagi · Tokyo, JP
• Junji Kido · Yonezawa, JP

Key dates

• Filing date: Sep 30, 2003
• Grant date: Mar 14, 2006
• Expiry date: Sep 30, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/3026

Abstract

An organic electroluminescent image display apparatus capable of displaying a high-quality image wherein light is taken out from a cathode layer side of an upper surface is described. The organic electroluminescent image display apparatus includes an anode layer, an organic layer, a barrier conductive layer having optical transparency, and a cathode layer having the optical transparency successively disposed on a substrate. The barrier conductive layer contains a metal, an inorganic nitride, and/or an inorganic oxide. Alternatively, the organic electroluminescent image display apparatus includes an anode layer, an organic layer, a first cathode layer having optical transparency, an electron transport protective layer having the optical transparency, and a second cathode layer having the optical transparency successively disposed on a substrate. The electron transport protective layer contains an alkali metal and/or an alkali earth metal in an electron transporting organic material.