US Patent Issued to Shanghai Huali Integrated Circuit on Feb. 17 for "Method for manufacturing raised strip-shaped active areas" (Chinese Inventor)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,557,576, issued on Feb. 17, was assigned to Shanghai Huali Integrated Circuit Corp. (Shanghai).

"Method for manufacturing raised strip-shaped active areas" was invented by Yang He (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing raised strip-shaped active areas is disclosed, including: step 1: performing etching on a semiconductor substrate to form patterning raised strip-shaped structures and shallow trenches; step 2: forming a second dielectric layer which fills the shallow trenches and extends to a surface of the first hard mask layer on top surfaces of the raised strip-shaped structures; step 3: performing the firs...