Patent ID: 7846808
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A method comprising: sequentially forming a first insulating film, a lower metal layer, a second insulating material, a upper metal layer and a third insulating material over a semiconductor substrate; forming a photoresist pattern over the third insulating material by a photolithographic process using a mask; simultaneously forming a third insulating film and an upper electrode by patterning the third insulating material and the upper metal layer by etching through the photoresist pattern; etching the second insulating material and simultaneously depositing a polymer on the side walls of the photoresist pattern, the third insulating film and the upper electrode arranged over the second insulating material; simultaneously forming a second insulating film and a lower electrode by patterning the second insulating material and the lower metal layer by etching through the photoresist pattern used to form the upper electrode and the polymer; and removing the photoresist pattern and the polymer.