Patent ID: 11894241
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method comprising:
forming a first package component comprising:
forming a first plurality of openings in a first dielectric layer;
depositing a first metallic material into the first plurality of openings;
performing a planarization process on the first metallic material and the first dielectric layer to form a first plurality of metal pads in the first dielectric layer, wherein one of the first plurality of metal pads comprises edge portions and a middle portion more recessed than the respective edge portions; and
selectively depositing a second metallic material over the first plurality of metal pads to form a first plurality of bond pads, wherein the first plurality of bond pads comprise the first plurality of metal pads and corresponding parts of the second metallic material; and

bonding the first package component to a second package component, wherein before the bonding, the first dielectric layer comprises a first top surface, and the second metallic material comprises a second top surface, and wherein the second top surface comprises a first point lower than the first top surface, and a second point higher than the first top surface, and wherein the first plurality of bond pads are bonded to the second package component.