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:
Mar. 17, 2020
Filed:
Jan. 13, 2017
Citizen Electronics Co., Ltd., Yamanashi-ken, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Junji Miyashita, Yamanashi-ken, JP;
Tomoo Udagawa, Yamanashi-ken, JP;
CITIZEN ELECTRONICS CO., LTD., Yamanashi-Ken, JP;
CITIZEN WATCH CO., LTD., Tokyo, JP;
Abstract
To provide a planar light unit that optically and mechanically connects a light-emitting device and a light guide plate to each other in a stable manner so as to improve luminous efficiency and brightness uniformity on a light exit surface. A planar light unitincludes: a light guide plate, which includes a light incident portionon a side edge of the light guide plate; a light-emitting device, which is configured to emit light into an inside of the light guide platethrough the light incident portion; and a light source board, on which the light-emitting deviceis mounted. The light incident portionincludes a recessand a reflecting-shaped portion. A flexible resin, which has a light-transmitting property and a flexibility, is disposed between a light incident surface, which is formed on the recess, and the light-emitting device