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:
Jan. 14, 2020
Filed:
Mar. 10, 2017
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Hisashi Watanabe, Sakai, JP;
Hirotoshi Yasunaga, Sakai, JP;
Youzou Kyoukane, Sakai, JP;
Takeshi Ishida, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A backlight deviceincludes LEDs, a light guide platehaving a light entering edge surfaceopposite the LEDsand having plate surfaces one of which is alight exit plate surface, and a light collecting portionincluding unit light collecting portionsthat extend in a normal direction of the light entering edge surfaceon the light exit plate surfaceand are arranged in a perpendicular direction perpendicular to the normal direction. The light guide plateincludes an opposite edge portionthat is opposite from an end portion thereof having the light entering edge surface, the opposite edge portionhas an edge surface a part of which is a curved edge surfacehaving a curved planar shape and the opposite edge portionhas the light exit plate surfacea part of which is a light collecting portion non-forming sectionon which no light collecting portionis formed.