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:
Oct. 15, 2013
Filed:
Oct. 13, 2011
Tomoko Kanaya, Otsu, JP;
Tadami Matsuyama, Ibaraki, JP;
Yoshihiko Sakaguchi, Otsu, JP;
Osamu Watanabe, Kusatsu, JP;
Tomoko Kanaya, Otsu, JP;
Tadami Matsuyama, Ibaraki, JP;
Yoshihiko Sakaguchi, Otsu, JP;
Osamu Watanabe, Kusatsu, JP;
Toray Industries, Inc., , JP;
Abstract
A white film including polymer film wherein both the thermal shrinkage rate in the longitudinal direction and that in the transverse direction of the film are not less than −0.2% and not more than 0.5% at 90° C., and a backlight for liquid crystal displays using such a white film. Since the white film hardly suffers from undulation or rise in its end portions, it is most suitable as a reflection film for backlights of liquid crystal displays. Since a backlight for liquid crystal displays using this white film can be used for a long time, it is applicable to liquid crystal displays of various electrical/electronic devices.