Patent ID: 6261922
Filing Date: 2001-07-17
Classification: H01L,Y10S

Abstract:
A method of forming a trench isolation region comprising:forming a first material layer over a semiconductive material substrate, the first material layer having an upper surface;forming an opening through the first material layer and into the semiconductive material substrate;forming a layer of insulative material within the opening and over the first material layer upper surface, the first material being more hydrophobic than the insulative material;polishing the insulative material layer utilizing a substantially non-porous hydrophobic material polishing pad and a water-comprising chemical composition, the polishing removing insulative material exposed to the polishing pad at a material-removal rate, the material-removal rate slowing after the insulative material layer is removed from over the first layer upper surface; anda plug of insulative material remaining within the opening in the semiconductive substrate after the material-removal rate slows, said plug being a trench isolation region.