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:
Oct. 20, 2009
Filed:
Apr. 16, 2007
Timothy J. Hebrink, Scandia, MN (US);
James M. Jonza, Woodbury, MN (US);
Randy S. Bay, Woodbury, MN (US);
Graham M. Clarke, Woodbury, MN (US);
Raymond L. Lucking, Hastings, MN (US);
Ta-hua Yu, Woodbury, MN (US);
Terry O. Collier, Woodbury, MN (US);
Timothy J. Hebrink, Scandia, MN (US);
James M. Jonza, Woodbury, MN (US);
Randy S. Bay, Woodbury, MN (US);
Graham M. Clarke, Woodbury, MN (US);
Raymond L. Lucking, Hastings, MN (US);
Ta-Hua Yu, Woodbury, MN (US);
Terry O. Collier, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Disclosed herein is an optical article having a top layer with a structured surface that collimates light, a core layer secured to the top layer opposite the structured surface, and a bottom layer secured to the core layer opposite the top layer. Either the top layer or the core layer includes a first extrudable polymer having a flexural modulus of greater than 2.5 GPa, and the other layer includes a second extrudable polymer having a flexural modulus of 2.5 GPa or less, an impact strength of greater than about 40 J/m, and tensile elongation at break of greater than about 5%. The bottom layer includes a third extrudable polymer. The bottom layer of the optical article may be structured to diffuse light. One or two optical articles may be secured to an optical film such as a polarizer film. Methods and display devices are also disclosed herein.