Patent ID: 9583560
Date: 2017-02-28
CPC Classifications: H01L

Claim:
1. A power semiconductor device of stripe cell geometry, comprising: a substrate, the substrate having an active area and a termination area surrounding the active area defined thereon; a plurality of striped power semiconductor units, the striped power semiconductor units being located in the active area, each of the striped power semiconductor units comprising a striped gate conductive structure; and a guard ring structure, the guard ring structure being located in the termination area and comprising at least a ring-shaped conductive structure surrounding the striped power semiconductor units, wherein a body-doped region is defined in the active area through the striped gate conductive structure and a doped region is defined in the termination area through the ring-shaped conductive structure, and there is a fixed distance between the body-doped region and the doped region, at least one of the striped gate conductive structures is separated from the ring-shaped conductive structure innermost of the termination area, a gate metal pad is located above the ring-shaped conductive structures and electrically connected to at least two of the ring-shaped conductive structures.