Patent ID: 6383859
Filing Date: 2002-05-07
Classification: H01L,Y10S

Abstract:
A method for manufacturing a semiconductor device, comprising, in the described order, the steps of:forming a first insulating film on a semiconductor substrate; forming a first conductive film on the first insulating film; forming a second insulating film on the first conductive film; forming a second conductive film on the second insulating film; forming a capacitor upper electrode by a first patterning for the second conductive film;, forming a capacitor dielectric film below the upper electrode by a second patterning for the second insulating film after the first patterning, wherein the capacitor dielectric film includes a portion extending laterally beyond the upper electrode; forming an anti-reflection coating film to cover the first conductive film and the capacitor dielectric film; forming a resist pattern for shapes of a capacitor lower electrode and a gate electrode of a transistor by coating the anti-reflection coating film with photoresist and subjecting the photoresist to exposure and development; forming the capacitor lower electrode and the gate electrode of the transistor by using the resist pattern as a mask to perform a third patterning for the anti-reflection coating film and the first conductive film; removing the anti-reflection coating film remaining on the capacitor upper electrode and the gate electrode of the transistor after the resist pattern is removed; and forming a source and a drain for the transistor by introducing impurities to both sides of the gate electrode of the semiconductor substrate.