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:
Aug. 22, 2006
Filed:
Oct. 15, 2004
Jyh-chain Lin, Tu-Chen, TW;
Ga-lane Chen, Fremont, CA (US);
Jyh-Chain Lin, Tu-Chen, TW;
Ga-Lane Chen, Fremont, CA (US);
Hon Hai Precision Ind. Co., LTD, Taipei Hsien, TW;
Abstract
A planar light device () for emitting light beams, including a light guide plate () having a plurality of diffraction grating units (). The light guide plate includes a light-emitting surface (), an opposite bottom surface, and a light incident surface () disposed therebetween. A light source () is disposed adjacent to the light incident surface. The diffraction grating units cover the bottom surface of the light guide plate. Each diffraction grating unit is divided into a first part (A) and a second part (B), the first and second parts having different alignment directions from each other.