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:
Jan. 10, 2017
Filed:
May. 09, 2012
David Scott Thompson, West Lakeland, MN (US);
Kevin R. Schaffer, Woodbury, MN (US);
Zhaohui Yang, North Oaks, MN (US);
Encai Hao, Woodbury, MN (US);
Audrey A. Sherman, St. Paul, MN (US);
Michael A. Meis, Stillwater, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Matthew S. Stay, Minneapolis, MN (US);
Robert F. Kamrath, Mahtomedi, MN (US);
Mikhail L. Pekurovsky, Bloomington, MN (US);
Steven D. Solomonson, Shoreview, MN (US);
David Scott Thompson, West Lakeland, MN (US);
Kevin R. Schaffer, Woodbury, MN (US);
Zhaohui Yang, North Oaks, MN (US);
Encai Hao, Woodbury, MN (US);
Audrey A. Sherman, St. Paul, MN (US);
Michael A. Meis, Stillwater, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Matthew S. Stay, Minneapolis, MN (US);
Robert F. Kamrath, Mahtomedi, MN (US);
Mikhail L. Pekurovsky, Bloomington, MN (US);
Steven D. Solomonson, Shoreview, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
This application describes a back-lit transmissive display including a transmissive display () and a variable index light extraction layer () optically coupled to a lightguide (). The variable index light extraction layer has first regions () of nanovoided polymeric material and second regions () of the nanovoided polymeric material and an additional material. The first and second regions are disposed such that for light being transported at a supercritical angle in the lightguide, the variable index light extraction layer selectively extracts the light in a predetermined way based on the geometric arrangement of the first and second regions. The transmissive display may be a transmissive display panel or a polymeric film such as a graphic.