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:
Mar. 15, 2011
Filed:
Dec. 27, 2005
Hoe Sup Soh, Seongnam-si, KR;
Man Hoan Lee, Kumi-shi, KR;
Ji Su Yoon, Seoul, KR;
Sung Keun Lee, Kumi-shi, KR;
Jin Hyuk Kwon, Gyeongsan-si, KR;
Hoe Sup Soh, Seongnam-si, KR;
Man Hoan Lee, Kumi-shi, KR;
Ji Su Yoon, Seoul, KR;
Sung Keun Lee, Kumi-shi, KR;
Jin Hyuk Kwon, Gyeongsan-si, KR;
LG. Display Co., Ltd., Seoul, KR;
Abstract
A prism sheet, a back light unit using the same and liquid crystal display device having the back light unit are disclosed, for improvement of light concentration, frontal luminance and viewing angle, in which the prism sheet includes a light-condensing film. The light condensing film has a plurality of prism peaks, each having a triangular cross section inclined surface which is inclined from a top surface of the light-condensing film at an angle of about 20° to about 40°.