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.

Date of Patent:
Jul. 05, 2016

Filed:

Aug. 14, 2013
Applicant:

Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;

Inventor:

Mitsuru Hosoki, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); F21V 8/00 (2006.01); G02F 1/1333 (2006.01); H04N 5/655 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0085 (2013.01); G02B 6/0073 (2013.01); G02B 6/0091 (2013.01); G02F 1/133308 (2013.01); G02F 1/133385 (2013.01); H04N 5/655 (2013.01); G02F 2001/133314 (2013.01); G02F 2201/36 (2013.01);
Abstract

A backlight unitincludes a chassis, an LED, a light guide plate, a duct member, and dissipative LED attachment portion. The chassisincludes a light exit portionthrough which light exits. The LEDis arranged close to an end portion of the chassis. The light guide plateis arranged closer to a middle area of the chassisthan the LEDand light from the LEDis guided toward the light exit portionthereby. The duct memberis arranged on the side opposite to the light exit portionside of the chassisand has an air passagetherein. The duct memberis formed of a composite plateincluding a resin corehaving a plate-like shape and a pair of metal platesandarranged so as to sandwich the resin corefrom a front side and a rear side. The dissipative LED attachment portionis provided to the duct memberand includes one part facing the air passageand another part protruding to inside of the chassisand to which the LEDis attached.


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