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:
Feb. 11, 2020
Filed:
Dec. 05, 2013
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Gary T. Boyd, Woodbury, MN (US);
Steven H. Kong, Woobury, MN (US);
Tri D. Pham, Woodbury, MN (US);
Qingbing Wang, Woodbury, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G02B 5/04 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0221 (2013.01); G02B 5/0278 (2013.01); G02B 5/045 (2013.01); G02B 5/3083 (2013.01);
Abstract
Brightness enhancing films with embedded diffusers are described. More specifically, films including a birefringent substrate, a prismatic layer carried by the substrate having linear prisms, and an embedded structured surface disposed between the substrate and the prismatic layer are disclosed. The embedded structured surface may include closely-packed structures. Processes for producing embedded structured surfaces having particular topographies are also disclosed.