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:
May. 16, 2006
Filed:
Jun. 03, 2003
Jin-seung Choi, Suwon, KR;
Hwan-young Choi, Anyang, KR;
Jee-hong Min, Yongin, KR;
Su-mi Lee, Suwon, KR;
Jin-hwan Kim, Suwon, KR;
Moon-gyu Lee, Suwon, KR;
Jin-seung Choi, Suwon, KR;
Hwan-young Choi, Anyang, KR;
Jee-hong Min, Yongin, KR;
Su-mi Lee, Suwon, KR;
Jin-hwan Kim, Suwon, KR;
Moon-gyu Lee, Suwon, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A backlight unit includes a point light source emitting light and a light guide panel including a holographic pattern formed to have a concentric circle shape having a center at the point light center. Thus, since the incident azimuth angle of light incident on the holographic pattern can be made constant, an efficiency of light exhausted through the light exhaust surface can be improved. Also, since the distribution of the exhaust azimuth angle of the exhaust light can be made uniform, a uniform brightness can be obtained from the exhaust surface.