Patent ID: 6870219

Claim:
A field effect transistor comprising: a semiconductor substrate having a surface; a drain region in the semiconductor substrate and having a first portion and a second portion more lightly doped than the first portion; a channel region in the semiconductor substrate and adjacent to the second portion of the drain region; a gate electrode overlying the channel region and located over the surface of the semiconductor substrate; a drain electrode overlying the first portion of the drain region and located over the surface of the semiconductor substrate; and an electrically conductive shield structure overlying the second portion of the drain region, wherein: the electrically conductive shield structure comprises: a first section at a first distance from the semiconductor substrate; and a second section at a second distance from the semiconductor substrate and at a third distance from the gate electrode; at least a portion of the electrically conductive shield structure overlies at least a portion of the gate electrode; the first section and the second section are electrically biased; the second distance is greater than the first distance; the third distance is greater than the first distance; and the drain electrode is closer to the second section of the electrically conductive shield structure than to the first section of the electrically conductive shield structure.