Patent ID: 7943494

Claim:
A method for blocking the dislocation propagation of a semiconductor, comprising: forming a plurality of recesses on a semiconductor layer where dislocation occurs; forming a blocking layer on each of the plurality of recesses; performing epitaxial process on the semiconductor layer to laterally grow for redirecting dislocation defects; wherein the formation of the plurality of recesses on the semiconductor layer where dislocation occurs is done by etching, and the formation of the blocking layer in the recesses comprises the steps of: depositing a blocking layer on the semiconductor layer; coating a photoresist layer on the blocking layer to fill in the plurality of recesses; removing the photoresist layer outside the plurality of recesses; removing the blocking layer outside the plurality of recesses by etching and leaving a plurality of areas of the blocking layer existing in the recesses; and removing the photoresist layer remaining in the recesses.