Patent ID: 6569784
Filing Date: 2003-05-27
Classification: H01L

Abstract:
A method of forming a layer of protect oxide overlying at least one gate structure created over the surface of a substrate, comprising the steps of:providing a substrate, at least one gate structure having been created over the surface of said substrate, said at least one gate structure comprising a layer of gate dielectric over which a layer of polysilicon forms said at least one gate structure, said layer of polysilicon comprising a top layer of said at least one gate structure, self-aligned impurity implants having been provided for said at least one gate structure, gate spacers having been provided over sidewalls of said at least one gate structure; and depositing a layer of protect oxide over the surface of said at least one gate structure, said layer of protect oxide comprising silicon rich CVD oxide having a refractive index for silicon of between about 1.57 and 1.60.