Shorts prevention in organic light-emitting diodes

US9601716B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Soeren Hartmann · Baesweiler, DE
• Michael Buechel · Eindhoven, NL
• Thomas Juestel · Aachen, DE

Key dates

• Filing date: Nov 18, 2009
• Grant date: Mar 21, 2017
• Expiry date: Dec 29, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/341

Abstract

An organic light emitting diode comprising a first electrode layer, a second electrode layer, a stack of functional layers, including an organic light-emitting layer, sandwiched between said first electrode layer and said second electrode layer, and an passivation layer arranged adjacent to said first electrode layer is disclosed. The passivation layer reacts with the first electrode layer to form an oxide at a reaction temperature that is induced by an evolving short circuit between the first electrode layer and the second electrode layer. The passivation layer is unreactive at temperatures lower than the reaction temperature.