Invention Grant
US07955920B2 Field effect transistor with self-aligned source and heavy body regions and method of manufacturing same 有权
具有自对准源和重体区的场效应晶体管及其制造方法

Field effect transistor with self-aligned source and heavy body regions and method of manufacturing same
Abstract:
A field effect transistor includes a plurality of trenches extending into a semiconductor region of a first conductivity type. The plurality of trenches include a plurality of gated trenches and a plurality of non-gated trenches. A body region of a second conductivity extends in the semiconductor region between adjacent trenches. A dielectric material fills a bottom portion of each of the gated and non-gated trenches. A gate electrode is disposed in each gated trench. A conductive material of the second conductivity type is disposed in each non-gated trench such that the conductive material and contacts corresponding body regions along sidewalls of the non-gated trench.
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