Rabin & Berdo, P.C.
LED chip having micro-lens structure
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.
Industrial Technology Research Institute
H
H01L
inventional
Shih-Hao Che-wei Kuo-Chang Tien-Fu
Hua Su Hu Huang