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:
May. 09, 2017
Filed:
Jun. 13, 2014
Kuraray Co., Ltd., Kurashiki-shi, JP;
Seiji Kinoshita, Tsukuba, JP;
KURARAY CO., LTD., Kurashiki-shi, JP;
Abstract
A light guide plate has at a bottom surface thereof a recessed strip. The recessed strip has first oblique surfaces and second oblique surfaces, a vertical angle θformed by the first oblique surfaces facing each other is set in a range of 95° to 110° while an apparent vertical angle θformed by the second oblique surfaces facing each other is set in a range of 60° to 75°. When defining one side of each of the first oblique surfaces as a first oblique side and one side of each of the second oblique surfaces as a second oblique side and the total length of the first oblique side and second oblique side as a total oblique side length, the ratio of the oblique side length of the second oblique side to the total oblique side length is set in a range of 40% to 65%.