Patent ID: 9455144
Filing Date: 2016-09-27
CPC Classification: H01L

Claim Text:
1. A method for growing a nitride-based semiconductor with high quality, the method comprising: forming a first mask layer on a substrate and forming a second mask layer on the first mask layer; performing dry etching on the first mask layer and the second mask layer which forms multiple openings in the first mask layer and the second mask layer and in which a part of the substrate is exposed; performing selective wet etching on the first mask layer abutting the multiple openings to form multiple recesses in the first mask layer and in which a second part of the substrate is exposed; depositing a third mask layer in the multiple recesses; and growing a nitride-based semiconductor from exposed surfaces of the substrate on sides of the third mask layer and expanding the growth of the nitride-based semiconductor via the multiple openings.