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. 27, 2009
Filed:
Sep. 21, 2006
John R. David, Stillwater, MN (US);
Ellen O. Aeling, St. Paul, MN (US);
Michael A. Meis, Stillwater, MN (US);
John R. David, Stillwater, MN (US);
Ellen O. Aeling, St. Paul, MN (US);
Michael A. Meis, Stillwater, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An LED backlight assembly is disclosed. The assembly includes a housing having a plurality of internal surfaces. At least one of the internal surfaces is a light emission surface and an opposing surface is a reflective surface. An optical film is disposed between the light emission surface and the reflective surface. The optical film includes at least one of a diffusing film, a reflective polarizing film, a multilayer optical film, and a structured surface film. An array of LEDs in electrical communication is disposed on the optical film. At least one LED of the array of LEDs has an illumination field that is directed toward the reflective surface.