Patent ID: 9437684
Filing Date: 2016-09-06
CPC Classification: B82Y,G02B,H01L,H01S

Claim Text:
1. A structure comprising a substrate and a semiconductor layer including a nitride semiconductor, wherein a hole is formed in the semiconductor layer, wherein the hole comprises a first portion having a substantial prism shape formed of a plurality of faces substantially perpendicular to an in-plane direction of the substrate and a second portion adjacently connected to the first portion and having a pyramid or truncated pyramid shape formed of a plurality of faces being not perpendicular to the in-plane direction of the substrate and inclined with respect to the in-plane direction of the substrate, and wherein a crystallographic face of the nitride semiconductor is formed on at least a part of the plurality of faces constituting the first portion of the hole and at least a part of the plurality of faces constituting the second portion of the hole.