Patent · US Active

OLED with minimal plasmonic losses

US10770690B2 · kind B2 · utility

0Cited by

22References

17Claims

0Family size

Assignee

THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US

Inventors

Stephen R. Forrest · Ann Arbor, US
Jongchan Kim · Seoul, KR

Key dates

Filing date	Nov 13, 2018
Grant date	Sep 8, 2020
Priority date	—
Expiry date	Nov 13, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH10K2102/3026
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A top-emitting organic light emitting device (OLED) that comprises: a substrate having an inward side and an outward side; an OLED body that includes a transparent bottom electrode proximate to the inward side of the substrate, an organic emitting layer, and a transparent top electrode in that order; a non-metallic, diffuse reflective layer with a roughened top surface proximate to and facing the bottom transparent electrode; and a high refractive index waveguide layer. The diffuse reflective layer is positioned between the inward side of the substrate and the OLED body, and the waveguide layer is positioned between the diffuse layer and the bottom transparent electrode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.