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

Claim 17:
18. A structure comprising:
a device die;
a molding compound molding the device die therein, wherein the molding compound comprises:
a first plurality of top surfaces that are planar; and
a second plurality of top surfaces that are curved, wherein top ends of the second plurality of top surfaces are joined to respective ones of the first plurality of top surfaces;

a plurality of through-vias in the molding compound, wherein one of the plurality of through-vias comprises a straight sidewall extending from a bottom end of one of the second plurality of top surfaces of the molding compound to a bottom surface of the molding compound;
a solder region; and
a polymer region on opposing sides of and contacting the solder region, wherein both of the solder region and the polymer region extend into one of the plurality of through-vias.