Patent ID: 7157784
Filing Date: 2007-01-02
Classification: H01L,Y10S

Abstract:
1. A multi-capacitor drain extended transistor device comprising: a first capacitor structure of the multi-capacitor drain extended transistor device comprising a first dielectric layer overlying a semiconductor substrate, and a first gate layer overlying the first dielectric layer, the first dielectric layer and the first gate layer having first and second lateral edges, and the first capacitor structure overlying a channel region of a first conductivity type in the semiconductor substrate; a second capacitor structure comprising the first gate layer, a second dielectric layer, overlying the first gate layer and a second gate layer overlying the second dielectric layer, wherein the second dielectric layer does not contact the first and second lateral edges of the first gate layer; a source region of a second conductivity type formed in the semiconductor substrate proximate the first lateral edge of the first dielectric layer and the first gate layer; a drain extension region lightly doped of the second conductivity type formed in the semiconductor substrate under a portion of the first capacitor structure; and a drain region of the second conductivity type formed within the drain extension region.