US 5,652,067 A · Organic electroluminescent device

Abstract

In an organic electroluminescent device including a substrate and formed thereon a multilayered structure successively having at least an anode layer, an organic electroluminescent layer and a cathode layer, a sealing layer having at least one compound selected from the group consisting of a metal oxide, a metal fluoride and a metal sulfide is further provided on the electrode layer formed later. A hole injecting and transporting layer is preferably provided between the anode layer and the organic electroluminescent layer. An electron injecting and transporting layer may also be provided between the organic electroluminescent layer and the cathode layer. At least one layer of the hole injecting and transporting layer, organic electroluminescent layer and electron injecting and transporting layer may be formed of a polyphosphazene compound or a polyether compound or a polyphosphate compound having an aromatic tertiary amine group in its main chain.

Claims23

Dependent claims

An organic electroluminescent device comprising:

a substrate;
a multilayered structure formed on the substrate, comprised of an anode layer, an organic electroluminescent layer and a cathode layer,
the multilayered structure being formed successively on the substrate in the order anode layer, organic electroluminescent layer, cathode layer, or in the order cathode layer, organic electroluminescent layer, anode layer;
and
a sealing layer formed on the multilayered structure, comprised of at least one compound selected from the group consisting of a metal oxide, a metal fluoride and a metal sulfide.

2 more elements

Dependencies are inferred from the claim text.

Organic electroluminescent device

Life of this patent

Organic electroluminescent device

Life of this patent

Abstract

Claims23