Patent ID: 6500747
Filing Date: 2002-12-31
Classification: H01L,Y10S

Abstract:
A method of manufacturing a semiconductor substrate, comprising the steps of:forming a first discontinuous portion in a III-IV compound semiconductor substrate to have first protrusions; transforming the first discontinuous portion into a second discontinuous portion having second protrusions different from first protrusions of the first discontinuous portion using one method selected from the group consisting of etching and growth methods, wherein said first discontinuous portion includes a top surface that is parallel to the plane of said substrate; and forming a GaN thin film on the second protrusions of the III-V compound semiconductor substrate at a lateral growth rate fast enough to cover vertically grown GaN thin film with the laterally grown GaN thin film, so that the discontinuous portion is covered with the GaN thin film; and wherein the step of transforming the first discontinuous portion into the second discontinuous portion comprises ething the first discontinuous portion to transform the first protrusions into the second protrusions.