Patent ID: 11862606
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A structure comprising:
a device die; and
a plurality of metal pads below the device die, wherein the plurality of metal pads comprise:
an array of metal pads comprising a first plurality of rows and a first plurality of columns of metal pads, wherein the array of metal pads comprises:
a first metal pad overlapped by the device die, wherein the first metal pad comprises a first round portion and a first bird-beak; and
a second metal pad vertically offset from the device die, wherein the first metal pad and the second metal pad are immediately neighboring to each other, wherein the second metal pad comprises a second round portion and a second bird-beak, and both of the first bird-beak and the second bird-beak point to a center of the device die in a top view of the structure.