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. 01, 2019
Filed:
Mar. 11, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Masanobu Harada, Sakai, JP;
Keitaro Matsui, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A backlight unit (lighting device)includes LEDs (light source), a light guide plateincluding a light entry end surfaceon at least a part of an outer peripheral end surface and a light output plate surfaceon a plate surface, and a wavelength conversion sheet (wavelength conversion member)disposed so as to overlap the light output plate surfaceof the light guide plateand containing a phosphor for wavelength-converting the light from the LEDs. Light from the LEDenters through the light entry end surfaceand exits through the light output plate surface. The wavelength conversion sheetincludes an increased phosphor portionon at least a part of outer peripheral side portionsOP thereof and the increased phosphor portionhas a phosphor content per unit area that is greater than that in a central portionIP.