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:
Sep. 20, 2016
Filed:
Apr. 22, 2013
Keiwa Inc., Osaka, JP;
Takahiro Tsuji, Osaka, JP;
Keiwa Inc., Osaka, JP;
Abstract
The view angle-restricting sheet includes an optically functional layer including: a plurality of first light transmission sections that are rectangular in cross section and arranged in a multi-stripe fashion; and one or more second light transmission section(s) that is/are each arranged between adjacent first light transmission sections. The first light transmission sections contain a light diffusing agent and a resin matrix. The proportion of the surface area occupied by the first light transmission sections with respect to the surface area of the optically functional layer is no less than 5% and no greater than 40%. The ratio (T/W) of the thickness (T) to the width (W) of the first light transmission section is preferably no less than 4 and no greater than 40. The average distance between adjacent first light transmission sections is preferably no less than 6 μm and no greater than 400 μm.