Methods for fabricating an STI film of a semiconductor device

Semiconductor device manufacturing: process – Formation of electrically isolated lateral semiconductive... – Grooved and refilled with deposited dielectric material

Reexamination Certificate

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C257SE21438

Reexamination Certificate

active

11027519

ABSTRACT:
Methods for fabricating a shallow trench isolation (STI) of a semiconductor device are disclosed. A disclosed method includes: forming a trench on a semiconductor substrate, forming an oxide layer on the semiconductor substrate and the trench, forming a photoresist pattern on the oxide layer exposing the oxide layer on a bottom surface of the trench, forming STI films on sidewalls of the trench by etching the exposed oxide layer using the photoresist pattern as an etch protection layer, removing the photoresist pattern, developing an epitaxial layer between the STI, and planarizing the epitaxial layer and the oxide layer.

REFERENCES:
patent: 6436791 (2002-08-01), Lin et al.
patent: 6444518 (2002-09-01), Jang et al.
patent: 6723618 (2004-04-01), Meyer et al.

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