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:
Dec. 27, 2005
Filed:
Jun. 05, 2003
Jee-hong Min, Yongin, KR;
Hwan-young Choi, Anyang, KR;
Moon-gyu Lee, Suwon, KR;
Su-mi Lee, Suwon, KR;
Jin-hwan Kim, Suwon, KR;
Jin-seung Choi, Suwon, KR;
Jee-hong Min, Yongin, KR;
Hwan-young Choi, Anyang, KR;
Moon-gyu Lee, Suwon, KR;
Su-mi Lee, Suwon, KR;
Jin-hwan Kim, Suwon, KR;
Jin-seung Choi, Suwon, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A backlight unit includes a light guide panel where a holographic pattern is formed. A point light source emits light to an edge of the light guide panel. A refractive member is provided between the point light source and the light guide panel and reduces an azimuth angle of light incident on the light guide panel. The refractive member includes, from an optical axis of the point light source, a light transmission zone transmitting light as it is, a blaze zone where a blaze pattern having a saw-toothed shape in which one surface near the optical axis and substantially parallel to the optical axis is formed, and a prism zone where a triangular prism pattern is formed. The backlight unit may further include a diffusive member diffusing light emitted from the point light source to be incident on the refractive member.