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. 15, 2012
Filed:
Jul. 16, 2007
Tien-fu Huang, Hsinchu, TW;
Shih-hao Hua, Hsinchu, TW;
Kuo-chang HU, Hsinchu, TW;
Che-wei Su, Hsinchu, TW;
Tien-Fu Huang, Hsinchu, TW;
Shih-Hao Hua, Hsinchu, TW;
Kuo-Chang Hu, Hsinchu, TW;
Che-wei Su, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A light-emitting diode (LED) chip having a micro-lens structure includes a light-emitting structure and a light guide lens. The light-emitting structure emits a light from a light-emitting surface upon being applied with a current, and the light guide lens is stacked on the light-emitting surface and used for emitting the light from a light guide surface of the light guide lens. The light guide surface has an annular ridge portion and a scatter region, such that the lights close to the central optical axis of the light-emitting surface (the region having the maximum light-emitting intensity) are deflected in a direction away from the central optical axis, and the lights far away from the central optical axis are deflected towards the central optical axis, so as to obtain a light with a uniform overall optical intensity.