Mixed vapor deposited films for electroluminescent devices

US6358631B1 · kind B1 · utility

Assignee

• THE TRUSTEES OF PRINCETON UNIVERSITY · US

Inventors

• Stephen R. Forrest · Ann Arbor, US
• Mark E. Thompson · Villa Park, US
• Paul E. Burrows · Chattaroy, US
• Dennis Matthew McCarty · Pennsauken, US
• Linda Susan Sapochak · Arlington, US
• Jon Andrew Cronin · Echt, NL

Key dates

• Filing date: Aug 6, 1996
• Grant date: Mar 19, 2002
• Expiry date: Aug 6, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/916
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A light emitting device (LED) structure and devices containing the same in which the LED structure contains a plurality of at least a first and a second light emitting organic device (LED) stacked one upon the other, to form a layered structure, with each LED separated one from the other by a transparent conductive layer to enable each device to receive a separate bias potential to operate to emit light through the stack, at least one of said LED's comprising an emission layer containing an emitting compound, optionally in a matrix of at least one host compound capable of carrying electrons to the emitting compound.