Patent ID: 7442990

Claim:
A semiconductor device having a recess channel, comprising: a semiconductor substrate having an isolation region and an active region defined by the isolation region; a first trench disposed on the semiconductor substrate, the first trench extending partially across the active region and across a first edge of the active region, thereby overlapping a portion of the active region and a portion of the isolation region; a second trench disposed on the semiconductor substrate, the second trench extending partially across the active region and across a second edge of the active region, thereby overlapping a portion of the active region and a portion of the isolation region; a gate insulation film disposed on the semiconductor substrate of the active region, including the first and second trenches; a first gate line disposed on the gate insulation film, the first gate line extending across the active region and fully filling the first trench; and a second gate line disposed on the gate insulation film, the second gate line extending across the active region and fully filling the second trench; wherein: the second edge is located on an opposite side of the active region relative to the first edge; and the first and second gate lines are spaced from each other.