The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2014
Filed:
Aug. 26, 2011
Vivian W. Jones, Woodbury, MN (US);
Sergey A. Lamansky, Apple Valley, MN (US);
James M. Nelson, Lino Lakes, MN (US);
Ha T. Le, Saint Paul, MN (US);
Vivian W. Jones, Woodbury, MN (US);
Sergey A. Lamansky, Apple Valley, MN (US);
James M. Nelson, Lino Lakes, MN (US);
Ha T. Le, Saint Paul, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A light extraction film having multi-periodic zones of engineered nanostructures. The light extraction film includes a flexible substrate, a layer of low index engineered nanostructures applied to the substrate, and a high index backfill layer applied over the nanostructures. The multi-periodic zones include a repeating zone of the nanostructures having multi-periodic characteristics. The repeating zone includes first and second sets of nanostructures having different periodic pitches. The multi-periodic zones can be used to enhance the light output and tune the angular luminosity of organic light emitting diode devices.