Patent ID: 11901255
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A semiconductor structure comprises:
a substrate;
a semiconductor device attached to a first surface of the substrate; and
an underfill material filling a gap between the substrate and the semiconductor device, wherein a fillet of the underfill material has a first portion distal from the substrate, a second portion proximate to the substrate, and a third portion between the first portion and the second portion, wherein a first sidewall of the first portion is slanted with respect to the first surface of the substrate, wherein a second sidewall of the second portion is slanted with respect to the first surface of the substrate, wherein a third sidewall of the third portion is perpendicular to the first surface of the substrate.