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:
May. 13, 2014
Filed:
Dec. 03, 2008
Brian A. Kinder, Woodbury, MN (US);
Gary T. Boyd, Woodbury, MN (US);
Stephen K. Eckhardt, White Bear Lake, MN (US);
Chun-yi Ting, Tayuan Hsien, TW;
Han-lin Tung, Hsin-Dian, TW;
Linda M. Rivard, Stillwater, MN (US);
Tao Liu, Woodbury, MN (US);
Brian A. Kinder, Woodbury, MN (US);
Gary T. Boyd, Woodbury, MN (US);
Stephen K. Eckhardt, White Bear Lake, MN (US);
Chun-Yi Ting, Tayuan Hsien, TW;
Han-Lin Tung, Hsin-Dian, TW;
Linda M. Rivard, Stillwater, MN (US);
Tao Liu, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A back reflector for a lightguide in a turning film backlight includes a prism film layer in direct contact with a reflective layer. The lightguide includes a light guiding region having a refractive index that is substantially spatially uniform. The reflective layer may be specular or diffuse and may include a multilayer polymeric film.