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. 25, 2019
Filed:
Aug. 19, 2015
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Joshua D. Tibbits, Eagan, MN (US);
Yu Yang, Eden Prairie, MN (US);
JianGang Su, Suzhou, CN;
Feng Zhao, Shanghai, CN;
Wenlong Yang, Jiangsu Province, CN;
Shu-Ching Fan, Woodbury, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02B 6/005 (2013.01); G02B 6/0055 (2013.01); G02B 6/0088 (2013.01); G02F 1/133609 (2013.01); G02F 2001/133614 (2013.01);
Abstract
Methods for improving color uniformity across an LCD backlight unit having a viewable area, a downconversion film element and blue LEDS comprise increasing blue light absorption while reflecting red and green light in at least one edge of the viewable area.