Patent ID: 11901302
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A structure comprising:
a device die;
a die-attach film over the device die;
a molding compound comprising:
a first portion encircling and contacting the device die, wherein the first portion comprises a first top surface coplanar with a second top surface of the die-attach film; and
a second portion comprising a third top surface lower than the first top surface;

a through-via in the second portion of the molding compound;
a polymer region extending into both of the molding compound and the through-via, wherein the through-via comprises side portions on opposite sides of the polymer region; and
a solder region extending into both of the molding compound and the through-via.