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:
Oct. 03, 2013
Jun Sakamoto, Osaka, JP;
Koji Sakamoto, Osaka, JP;
Jun Sakamoto, Osaka, JP;
Other;
Abstract
A light guide plate includes: a light guide member with a light incident surface and first and second principal surfaces; and first and second protrusions formed on at least one of the first and second principal surfaces. When the first principal surface is viewed in a normal direction, a distance between the light incident surface and the second protrusion is larger than a distance between the light incident surface and the first protrusion; each of the first and second protrusions has a shape, a length of which in an orthogonal direction orthogonal to a propagation direction of light incident from the light incident surface increases monotonously in the propagation direction; and a minimum value of the length of the second protrusion in the orthogonal direction is larger than a maximum value of the length of the first protrusion in the orthogonal direction.