ALEXANDRIA, Va., April 21 -- United States Patent no. 12,610,568, issued on April 21, was assigned to NANYA TECHNOLOGY Corp. (New Taipei City, Taiwan).
"Semiconductor device with electrode having step-shaped sidewall and method for preparing the same" was invented by Hsih-Yang Chiu (Taoyuan City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device includes a bottom electrode structure disposed over a semiconductor substrate. The bottom electrode structure includes a first metal layer, a second metal layer, a third metal layer, a fourth metal layer, and a fifth metal layer from bottom to top. The first metal layer, the third metal layer and the fifth metal layer include a first metal ...