A semiconductor device and a method of forming the same are provided. The semiconductor device includes a first logic die including a first through via, an image sensor die hybrid bonded to the first logic die, and a second logic die bonded to the first logic die. A front side of the first logic die facing a front side of the image sensor die. A front side of the second logic die facing a backside of the first logic die. The second logic die comprising a first conductive pad electrically coupled to the first through via.