Patent ID: 11955460
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A package-on-package (PoP) structure comprising:
a first semiconductor package having a first side, a second side opposing the first side, and external connectors at the second side of the first semiconductor package;
a second semiconductor package having a third side and a fourth side opposing the third side, wherein the fourth side of the second semiconductor package faces the first side of the first semiconductor package;
inter-package connectors coupled between the first side of the first semiconductor package and the fourth side of the second semiconductor package; and
a first molding material, wherein the first molding material is disposed between the first semiconductor package and the second semiconductor package, and extends along the second side of the first semiconductor package, wherein the third side of the second semiconductor package is free of the first molding material, wherein a coefficient of thermal expansion (CTE) of the first molding material is between a first overall CTE of the first semiconductor package and a second overall CTE of the second semiconductor package.