Semiconductor structure
AssigneeExcelliance MOS Corporation
InventorChu-Kuang Liu
Life of this patent
Estimating the term…
Abstract
A semiconductor structure is provided. A second area is disposed between first and third areas. An epitaxial layer is on a substrate. A body layer is in the epitaxial layer in first and second areas. First and second gates are in the body layer and in a portion of the epitaxial layer. The first gate is in the substrate and partially in first and second areas. The second gate is in the substrate and partially in second and third areas. A first contact plug is in a portion of the body layer in the first area. A second contact plug is at least in the epitaxial layer in the third area and contacts the epitaxial layer and the second gate. The first contact plug is electrically connected to the second contact plug. A first doped region is in the body layer between the first contact plug and the first gate.
Claims16
A semiconductor structure, comprising:
- a substrate of a first conductivity type, having a first area, a second area and a third area, wherein the second area is disposed between the first area and the third area;
- an epitaxial layer of the first conductivity type, disposed on the substrate;
- a body layer of a second conductivity type, disposed in the epitaxial layer in the first area and the second area;
- a first gate and a second gate, disposed in the body layer and in a portion of the epitaxial layer outside the body layer, wherein the first gate is disposed in the substrate, partially in the first area and partially in the second area, and the second gate is disposed in the substrate, partially in the second area and partially in the third area;
- a first contact plug, disposed in a portion of the body layer in the first area;
- a second contact plug, at least disposed in the epitaxial layer in the third area and physically and electrically contacting the epitaxial layer and the second gate, wherein the first contact plug is electrically connected to the second contact plug;
- and
- a first doped region of the first conductivity type, disposed in the body layer between the first contact plug and the first gate.
Dependencies are inferred from the claim text.