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:
Jun. 20, 2017
Filed:
Dec. 10, 2015
3m Innovative Properties Company, St. Paul, MN (US);
Martin B. Wolk, Woodbury, MN (US);
Michael J. Sykora, New Richmond, WI (US);
Robert L. Brott, Woodbury, MN (US);
William J. Bryan, Mahtomedi, MN (US);
Erik A. Aho, North St. Paul, MN (US);
Martin Kristoffersen, Porsgrunn, NO;
Michael A. Meis, Stillwater, MN (US);
Kevin R. Schaffer, Woodbury, MN (US);
Audrey A. Sherman, Woodbury, MN (US);
John C. Schultz, Afton, MN (US);
Mieczyslaw H. Mazurek, Roseville, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
An optical article, such as a backlight for electronic display devices, is disclosed. The optical article includes a lightguide, a viscoelastic layer disposed on the light guide and a nanovoided polymeric layer disposed on the viscoelastic layer. The nanovoided polymeric layer comprises a plurality of interconnected nanovoids and at least some of the interconnected nanovoids are connected to one another by hollow passages. The lightguide may be optically coupled to a light source, and the viscoelastic layer and the nanovoided polymeric layer may be used in conjunction with the lightguide to manage light emitted by the light source. The viscoelastic layer may be a pressure sensitive adhesive.