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. 31, 2017
Filed:
Sep. 17, 2014
Applicants:
Japan Display Inc., Tokyo, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Inventors:
Assignees:
Japan Display Inc., Tokyo, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); F21V 8/00 (2006.01); G02F 1/1368 (2006.01);
U.S. Cl.
CPC ...
G02B 6/003 (2013.01); G02B 6/0016 (2013.01); G02B 6/0028 (2013.01); G02B 6/0038 (2013.01); G02B 6/0068 (2013.01); G02F 1/1368 (2013.01); G02F 1/133514 (2013.01); G02F 1/133524 (2013.01); G02F 1/133603 (2013.01); G02F 1/133615 (2013.01);
Abstract
A back light unit includes a light guide plate having at least one light introducing portion and a light exit portion, the front surface of the light exit portion being a light exit surface, and a light source facing the light guide plate and emitting light in a light emitting direction. The at least one light introducing portion includes a first portion and a second portion which is connected to the light exit portion, and in which the second portion spreads wider than the first portion in plan view.