Patent ID: 6653663
Filing Date: 2003-11-25
Classification: H01L,H01S

Abstract:
A nitride semiconductor device comprising:a substrate made of a III-V group compound semiconductor containing nitride and having a main surface and primary and secondary cleavage surfaces; and a function region made of a III-V group compound semiconductor layer containing nitride formed on the main surface of the substrate and extending in the direction; wherein the main surface of the substrate is a surface tilted from a {0001} plane by tilt angle &thgr; in a range of 13Â° to 90Â°, and wherein when the tilt angle &thgr; is in the range of 45Â°&lE;90Â° the primary cleavage surface is along a {11-20} plane and the secondary cleavage surface is along the {0001} plane, and when the tilt angle &thgr; is in the range of 13Â°&lE;45Â° the primary cleavage surface is along a {11-20} plane and the secondary cleavage surface is along the {1-101} plane.