| CPC H01L 25/0657 (2013.01) [H01L 21/304 (2013.01); H01L 21/56 (2013.01); H01L 23/3157 (2013.01); H01L 23/5384 (2013.01); H01L 23/544 (2013.01); H01L 24/05 (2013.01); H01L 21/6835 (2013.01); H01L 2224/0231 (2013.01); H01L 2224/02372 (2013.01); H01L 2224/80203 (2013.01); H01L 2224/8084 (2013.01); H01L 2225/06541 (2013.01); H10D 86/0214 (2025.01)] | 20 Claims |

|
1. A package, comprising:
a carrier substrate; and
a first die and a second die stacked on the carrier substrate in sequential order, wherein the first die comprises a first bonding layer, a second bonding layer, and an alignment mark embedded in the first bonding layer, the second die comprises a third bonding layer, a surface of the first bonding layer form a rear surface of the first die, a surface of the second bonding layer form an active surface of the first die, the rear surface of the first die is in physical contact with the carrier substrate, and the active surface of the first die is in physical contact with the third bonding layer of the second die.
|