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:
Feb. 19, 2019
Filed:
Feb. 05, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Mitsuhiro Murata, Sakai, JP;
Ryuzo Yuki, Sakai, JP;
Hisashi Watanabe, Sakai, JP;
Shinya Kadowaki, Sakai, JP;
Takeshi Ishida, Sakai, JP;
Takeshi Masuda, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A backlight device () includes a light guide plate (), and LEDs (), and wiring portions (). The light guide plate () has a substantially circular outer shape and has fan-shaped areas (SA) defined by segment lines (SL) extending through a center (C) thereof. All the segment lines (SL) meet at the center (C). The LEDs () are arranged such that middle positions between LEDs () each located at an end in the circumferential direction in the respective sets of the LEDs () provided for the fan-shaped areas (SA) adjacent to each other in the circumferential direction coincides with the segment lines (SL). The wiring portions () are equal or larger in number than the LEDs () included in each of the sets of LEDs () provided for the fan-shaped areas (SA) and are configured to supply electric power to the respective LEDs ().