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:
Oct. 19, 2010
Filed:
May. 18, 2006
Nagata Yoshihide, Kanagawa, JP;
Sato Atsushi, Kanagawa, JP;
Ji Woo Kim, Yongin-si, KR;
Cheil Industries, Inc., Gumi-si, Gyeongsangbuk-do, KR;
Abstract
Disclosed herein is a backlight unit which has high utilization efficiency over the entire visible wavelength band. The backlight unit includes a reflective polarization splitter to allow a light of a surface light source to emit therethrough. The reflective polarization splitter includes a plurality of wires arranged in a wire grid shape. With this structure, when light of the surface light source passes through the wires, the wires passes only a certain polarized light, for example, s-polarized light having a vibration plane vertical to a longitudinal direction of the lattice wires therethrough, while reflecting other polarized components of the light according to the reflection coefficient of the wires.