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:
Nov. 15, 2011
Filed:
Dec. 24, 2008
Sun-hee Lee, Incheon, KR;
Seung-hoon Yang, Daegu, KR;
Sun-Hee Lee, Incheon, KR;
Seung-Hoon Yang, Daegu, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
A backlight unit for a liquid crystal display panel includes a lamp, a plurality of optical sheets, a light guide that guides light from the lamp toward the optical sheets, and a reflector facing a rear surface of the light guide. The light guide includes a first plurality of geometric shapes at the rear surface thereof that substantially directs the light incident on the light guide toward the optical sheets, and a second plurality of geometric shapes at a peripheral portion of the rear surface thereof to prevent the reflector from sticking to the light guide, a density of the second plurality of geometric shapes is less than the density of the first plurality of geometric shapes.