Patent ID: 6281070
Filing Date: 2001-08-28
Classification: H01L,Y10S

Abstract:
A semiconductor processing method of forming capacitor containers over a substrate comprising:forming a plurality of conductive lines over a substrate;forming a first conductive material over the substrate and between the conductive lines;forming a second conductive material over the first conductive material, the second conductive material being different from the first conductive material;forming a masking layer over the second conductive material;first etching a plurality of capacitor container openings through the masking layer substantially selective relative to the second conductive material, the first etching outwardly exposing the second conductive material;detecting outward exposure of the second conductive material, and, in response thereto, terminating the first etching;second etching the second conductive material through the capacitor container openings substantially selective relative to the first conductive material, the second etching outwardly exposing the first conductive material; anddetecting outward exposure of the first conductive material, and, in response thereto, terminating the second etching.