| 摘要 |
PROBLEM TO BE SOLVED: To enhance breakdown strength at off time by releasing a drain region facing a source region. SOLUTION: A source region 6 is rectangular and corner parts 11a, b are semicircular having diameter equal to the short side of the rectangle. A heavily doped p region 8 is provided for well contact. Heavily doped n-type drain regions 7a, 7b are located oppositely to the linear regions 10a, 10b of the source region 6. The heavily doped drain region is not formed at the position facing the corner part of the source region 6. |
