Patent · US Active

OLED light extraction films having nanoparticles and periodic structures

US8692446B2 · kind B2 · utility

14Cited by

11References

9Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Jun-Ying Zhang · Perrysburg, US
Encai Hao · Woodbury, US
Vivian W. Jones · Woodbury, US
Terry L. Smith · Plainfield, US
Sergey Lamansky · Redmond, US
Ha T. Le · Windom, US
Dawn Qiu · Saint Paul, US
William Blake Kolb · Windom, US
James M. Battiato · Austin, US
David B. Stegall · Austin, US

Key dates

Filing date	Mar 17, 2011
Grant date	Apr 8, 2014
Priority date	—
Expiry date	Jul 28, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH10K59/877
WIPO fieldMicro-structural and nano-technology
WIPO sectorChemistry

Abstract

A light extraction film having nanoparticles with engineered periodic structures. The light extraction film includes a substantially transparent substrate, low index one-dimensional or two-dimensional periodic structures on the substrate, and a high index planarizing backfill layer applied over the periodic structures. Light scattering nanoparticles are either applied in a layer over the periodic structures or included in the backfill layer.

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