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:
Dec. 01, 2020
Filed:
Feb. 21, 2019
Minebea Mitsumi Inc., Nagano, JP;
Kazumasa Adachi, Hamamatsu, JP;
MINEBEA MITSUMI INC., Nagano, JP;
Abstract
A planar illumination device according to an embodiment includes a light guide plate, light sources, and a fixation member with a strip shape. The light guide plate outputs light that is incident on a side surface thereof from one principal surface among two principal surfaces thereof. The light sources face the side surface, are arrayed to be spaced apart in a longitudinal direction of the side surface, and have light-emitting surfaces that emit light that is incident on the side surface. The fixation member is arranged between the light guide plate and another member and fixes the light guide plate to the other member. The fixation member is bonded to regions on the light guide plate that are each located anteriorly between two adjacent light sources in mutually different combinations and that are located to be spaced apart in an array direction of the light sources.