Patent ID: 8409888
Filing Date: 2013-04-02
Classification: B82Y,H01S

Abstract:
1. A semiconductor fabrication method comprising: forming a mask layer having a bars pattern on top of a semiconductor layer structure on a first semiconductor substrate; using the mask layer as a mask, removing a portion of the semiconductor layer structure down to an intermediate layer; wherein the intermediate layer is situated between the top of the semiconductor layer structure and the first substrate; wherein the first substrate having the semiconductor layer structure has a front-side; coating the front-side with a protective layer; wherein the intermediate layer is situated between the protective layer and the first substrate; mounting the first substrate having the semiconductor layer structure and the protective layer front-side down on a second substrate; removing the first substrate; selectively stopping the removing of the first substrate on the intermediate layer; removing a portion of the intermediate layer; dissolving the protective layer and thus releasing a bar; ultrasonically agitating a solution containing the bar which causes the bar to cleave, and thus produces a bar with cleaved facet.