Patent ID: 7863685

Claim:
A trenched semiconductor power device comprising a plurality of trenched gates surrounded by source regions near a top surface of a semiconductor substrate encompassed in body regions covered under an insulation layer, wherein: each of the body regions extended between two adjacent trenched gates further having a split-body gap exposing a top surface above an epitaxial layer above said semiconductor substrate; said trenched gates are partially filled with a polysilicon therein and having a top insulation layer covering over a top surface of said polysilicon in said trenched gate and further exposing a portion of upper trench sidewalls adjacent to said source regions; Schottky junction barrier layer covering the top surface above the epitaxial layer between the trenched gate thus forming embedded Schottky diodes above said split-body gap between adjacent trenched gates; and said Schottky junction barrier layer further extending above the top insulation layer in said trenched gate and covering said upper trench sidewalls of said trenched gates wherein said Schottky junction barrier layer is in direct contact with said source region through said upper trench sidewalls and top surface of said source region for expanding three-dimensional (3D) current conducting surfaces to said source regions.