Method for manufacturing capacitor element

Semiconductor device manufacturing: process – Having magnetic or ferroelectric component

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438396, 438584, 438381, H01L 2100, H01L 2120

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active

061001007

ABSTRACT:
The method of this invention provides a method for manufacturing a capacitor element composed of films. The films have a precise etched shape without a residue that may be generated as a reaction product in a dry-etching process. In this invention, washing in a non-oxidizing atmosphere, inclining a side of a mask for etching or heating a substrate prevents the reaction product from remaining on the film as a residue. The reaction product can be washed away with water, acid or organic solvent in inert gas. The reaction product can be removed from the side of the mask by sputter-etching with ions for dry-etching. The reaction product can be exhausted without adhering to the mask by heating the substrate at a temperature between 100.degree. C. and 400.degree. C.

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