Patent ID: 6043119
Filing Date: 2000-03-28
Classification: H01L

Abstract:
A method of making a capacitor comprising:forming two gate stacks on a semiconductor substrate;forming an insulation layer for planarization over said two gate stacks;forming a hard mask over the insulation layer;patterning and etching the hard mask to form a mask exposure that is above and between said two gate stacks;anisotropically etching through said mask exposure at least partially through said insulation layer to form a storage container cell precursor;isotropic etching said storage container cell precursor selective to said hard mask to form a concave shaped storage container cell;forming a polysilicon storage node from doped polysilicon:within said concave shaped storage container cell; andupon the hard mask;removing said hard mask;forming a storage cell dielectric on said polysilicon storage node; andforming a cell plate polysilicon layer on said storage cell dielectric.