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:
Jun. 12, 2018
Filed:
Sep. 25, 2015
Applicant:
Nichia Corporation, Anan-shi, JP;
Inventors:
Hiroto Itoi, Anan, JP;
Ryosuke Wakaki, Tokushima, JP;
Ken Katsuragi, Anan, JP;
Yusaku Achi, Tokushima, JP;
Shingo Masui, Tokushima, JP;
Assignee:
NICHIA CORPORATION, Anan-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21K 99/00 (2016.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0073 (2013.01); G02B 6/0023 (2013.01); G02B 6/0068 (2013.01);
Abstract
A backlight unit has a light-guide plate and a light source optically coupled with the light-guide plate, with which light is input from a plane of the light-guide plate and white-light is output from the first principal plane of the light-guide plate. The light source has a plurality of blue light emitting diodes, red phosphor material excited by light from the blue light emitting diodes and emits red light, and a plurality of green semiconductor lasers having emission peaks at green light wavelengths.