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:
Mar. 09, 2010
Filed:
Oct. 19, 2006
Chih-kuang Chen, Kaohsiung, TW;
Ci-guang Peng, Chiayi, TW;
Chih-Kuang Chen, Kaohsiung, TW;
Ci-Guang Peng, Chiayi, TW;
AU Optronics Corporation, Hsinchu, TW;
Abstract
A back-light source comprises a plurality of light-emitting devices, each light-emitting device having a light-emitting package and a lens surface. In at least some of the light emitting devices, the radius of curvature in one direction of the lens surface is different from the radius of curvature in another direction such that one of the radii of curvature of the lens is greater than the other radius of curvature. In particular, one radius of curvature is equal to or smaller than half the length of the device. The other radius of curvature is equal to or greater than half the length of the device. As such, the lens has different focal lengths in different directions. The light-emitting package can have a plurality of light-emitting sources of a single color or of different colors.