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:
Aug. 02, 2016
Filed:
Mar. 27, 2014
Applicant:
Keiwa Inc., Osaka, JP;
Inventor:
Hironori Nakashima, Osaka, JP;
Assignee:
KEIWA INC., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); F21V 8/00 (2006.01); B29C 47/06 (2006.01); B29D 11/00 (2006.01); B29C 47/56 (2006.01); B29C 47/14 (2006.01); B29C 47/00 (2006.01); B29C 47/88 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0035 (2013.01); B29C 47/065 (2013.01); B29C 47/14 (2013.01); B29C 47/56 (2013.01); B29D 11/00663 (2013.01); G02B 6/0065 (2013.01); G02B 6/0093 (2013.01); B29C 47/0021 (2013.01); B29C 47/0064 (2013.01); B29C 47/886 (2013.01); B29C 47/8845 (2013.01); G02F 1/133524 (2013.01); G02F 1/133615 (2013.01); G02F 2001/133607 (2013.01);
Abstract
The present invention relates to a light guide film for a backlight unit of an ultrathin liquid crystal display device, the light guide film allowing rays of light entering from an end face to exit from a front face side, and including a hard layer () having a pencil hardness of at least HB, the hard layer () containing a polycarbonate as a principal component, and at least one face of the hard layer being exposed, and the entire light guide film () having an average thickness of no less than 100 μm and no greater than 600 μm.