Epistar Corporation

Asahi Kasei Corporation

Mei-Li Wang

Hsin-Hsiung Huang

Jennhwa Fu

A semiconductor device comprises a substrate comprising a surface area having a plurality of patterns therein, wherein the plurality of patterns comprises a plurality of first patterns and a plurality of second patterns; and a light-emitting stack formed on the substrate; wherein each of the first patterns comprises a first feature length and each of the second patterns comprises a second feature length smaller than the first feature length, and wherein, in a square area of 30 microns by 30 microns chosen from the surface area, an amount of the plurality of the first patterns is more than that of the plurality of the second patterns.

Growing community of inventors

Hsinchu, Taiwan

Mei-Li Wang