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US08530329B2 Methods of fabricating semiconductor devices having various isolation regions 有权
制造具有各种隔离区域的半导体器件的方法

Methods of fabricating semiconductor devices having various isolation regions
Abstract:
A method of fabricating a semiconductor device includes forming a first trench and a second trench in a semiconductor substrate, forming a first insulator to completely fill the first trench, the first insulator covering a bottom surface and lower sidewalls of the second trench and exposing upper sidewalls of the second trench, and forming a second insulator on the first insulator in the second trench.
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