Tandem OLED device with intermediate connector

US7955719B2 · kind B2 · utility

Assignee

• Global OLED Technology LLC · US

Inventors

• Tukaram K. Hatwar · Penfield, US
• Jeffrey P. Spindler · Rochester, US
• William J. Begley · Webster, US

Key dates

• Filing date: Jan 30, 2008
• Grant date: Jun 7, 2011
• Expiry date: Nov 22, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/917

Abstract

A tandem OLED device including an anode; a cathode; at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; and an intermediate connector disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the n-doped organic layer includes an alkali metal and an organic alkali metal complex.