Patent ID: 11881516
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor element structure, comprising:
a SiC substrate having a front surface on which a GaN layer is stacked;
a source electrode formed on a front surface of the GaN layer, the source electrode comprising a barrier metal layer and a first layer that provides ohmic contact with the GaN layer;
a MIM capacitor formed on a front surface of the source electrode and comprising a plurality of layers; and
a via hole extending from a rear surface of the SiC substrate to reach the source electrode, wherein
a bottom of the via hole is placed between a rear surface of the source electrode and a rear surface of the barrier metal layer, and
the barrier metal layer is positioned directly between the first layer and each of the plurality of layers of the MIM capacitor.