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. 13, 2005
Filed:
Aug. 06, 2003
Tai-cheng Yu, Tu-Chen, TW;
Charles Leu, Fremont, CA (US);
Kun-jung Tsai, Tu-Chen, TW;
Ga-lane Chen, Fremont, CA (US);
Tai-Cheng Yu, Tu-Chen, TW;
Charles Leu, Fremont, CA (US);
Kun-Jung Tsai, Tu-Chen, TW;
Ga-Lane Chen, Fremont, CA (US);
Hon Hai Precision Ind. Co., LTD, Taipei Hsien, TW;
Abstract
A backlight system () in accordance with the present invention includes a plurality of light sources () for emitting light beams and a light guide plate () for receiving the light beams emitted by the light sources. The light guide plate includes a light input surface () and a light output surface () joining the light input surface. The light input surface has a plurality of recesses () therein. The recesses have cylindrical surfaces, each having a specific curvature, and the light beams emitted by the light sources pass through the cylindrical surfaces orthogonally. Since nearly all of the light beams enter into the light guide plate with few being reflected at the light input surface, the backlight system is highly efficient in light utilization.