Patent ID: 11901419
Assignee: FUJI ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The semiconductor device according to claim 2,
wherein the hydrogen chemical concentration distribution includes:
a first upper surface side skirt in which a hydrogen concentration decreases from the first hydrogen concentration peak toward the upper surface side;
a first lower surface side skirt in which a hydrogen concentration more gradually decreases from the first hydrogen concentration peak toward the lower surface side than the first upper surface side skirt;
a second lower surface side skirt in which a hydrogen concentration decreases from the second hydrogen concentration peak toward the lower surface side; and
a second upper surface side skirt in which a hydrogen concentration more gradually decreases from the second hydrogen concentration peak toward the upper surface side than the second lower surface side skirt.