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:
Feb. 26, 2008
Filed:
Jan. 27, 2005
Sun-il Kim, Suwon-si, KR;
Hwan-young Choi, Yongin-si, KR;
Moon-gyu Lee, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A luminous backlight unit designed to compensate for a difference in distribution of light output on an output surface of a light guiding panel, and a method of manufacturing a diffuser employed in the backlight unit. The backlight unit includes: one or more light sources that emit light; a light guide panel which guides the propagation of light incident through a side edge thereof and has a light-emission surface; a holographic pattern provided on a surface of the light guide panel, for converting the incident light into a surface light and outputting the converted surface light to the light-emission surface; and a diffuser disposed facing the light-emission surface, for diffusing the emitted light from the light-emission surface and is characterized in that distribution of diffusion angles is varied as it goes from a point close to the light source to a point distant from the light source.