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. 25, 2013
Filed:
Sep. 15, 2009
Min Joo Kim, Seoul, KR;
Min Joo Kim, Seoul, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
A backlight unit with uniform brightness (luminance) is disclosed. The backlight unit includes: a plurality of light sources arranged at a fixed interval; a diffusion plate disposed on the light sources to primarily diffuse light emitted from the light sources; and a diffusion sheet configured to secondarily diffuse the primarily diffused light from the diffusion plate, wherein the surface of the diffusion sheet is divided into first regions not opposite to the light and second regions opposite to the light sources, and the diffusion sheet includes lens pattern portions formed on the second regions.
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