Patent ID: 9406711
Filing Date: 2016-08-02
CPC Classification: H01L

Claim Text:
1. An apparatus comprising: a backside illuminated image sensor device comprising: a carrier comprising a plurality of logic circuits and a second bonding pad formed in the carrier, wherein the carrier and the backside illuminated image sensor device are face-to-face bonded together and a bonded non-metal surface of the carrier is in direct contact with a bonded non-metal surface of the backside illuminated image sensor device, and wherein a top surface of the first bonding pad is coplanar with the bonded non-metal surface of the backside illuminated image sensor device and a top surface of the second bonding pad is coplanar with the bonded non-metal surface of the carrier, and wherein the first bonding pad is electrically coupled to the second bonding pad, and wherein the first bonding pad, the second bonding pad, and an interface layer between the first bonding pad and the second bonding pad are formed of a same material, and wherein the first bonding pad is aligned face-to-face with the second bonding pad; and an input/output pad on the second side of the backside illuminated image sensor device, wherein the input/output pad is connected to the plurality of logic circuits through a first via, a third bonding pad, a fourth bonding pad and a second via, and wherein a non-bonding surface of the third bonding pad is level with a non-bonding surface of the first bonding pad.