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:
Oct. 28, 2014
Filed:
Dec. 17, 2010
Takahiro Yoshikawa, Osaka, JP;
Takahiro Yoshikawa, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A lighting device maintains an optical design and absorbs expansion of a light guide plate with a simple structure if the light guide plate expands toward a light source side. A backlight unitincludes an LED board; an LED light sourcesarranged on the LED board; a light guide platehaving a flat plate shape and including light entrance surfacesandon side surfaces that are provided on opposite sides, the light entrance surfacesandbeing arranged to face the LED light sourcesof the LED board; and spacer members() regulating a distance Wbetween the LED boardand the light guide plate. Each spacer member() has a Young's modulus smaller than that of the light guide plate. Each spacer member() regulates the distance Wbetween the LED light sourcesand the light guide plateand absorbs the expansion of the light guide plate