Patent ID: 9735129
Date: 2017-08-15
CPC Classifications: H01L

Claim:
1. A method comprising: forming a first redistribution layer over a first carrier substrate, the first redistribution layer having a first side, the first side having a first area and a second area surrounding the first area; forming an alignment structure on the first side of the first redistribution layer in the second area; forming an electrical connector on the first side of the first redistribution layer in the second area; after forming the alignment structure and the electrical connector, aligning a first die over the first side of the first redistribution layer in the first area using the alignment structure as an alignment mark, the alignment structure being located at a first distance from the first die, the electrical connector being located at a second distance from the first die, the second distance being greater than the first distance; bonding the first die to the first side of the first redistribution layer in the first area; forming a second redistribution layer; and after forming the second redistribution layer, bonding the second redistribution layer to the first die using a set of bonding structures to form a set of bonding joints, at least one of the set of bonding joints being bonded to the first die.