Patent ID: 11894325
Assignee: ROHM CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a semiconductor layer that has a main surface;
an electrode pad that is formed on the main surface;
an underlayer that is formed on the main surface and that has an opening by which the electrode pad is exposed;
a rewiring that has a first wiring surface connected to the electrode pad and a second wiring surface positioned on a side opposite to the first wiring surface and being roughened, the rewiring being connected to the electrode pad in the opening and being drawn out from the opening onto the underlayer;
a post electrode connected to the second wiring surface;
a resin that covers the second wiring surface on the main surface and that seals both the rewiring and the post electrode such as to expose a part of the post electrode; and
an underlayer recess formed at a part exposed from the rewiring in the underlayer.