Patent ID: 9059061
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. An image sensor structure, comprising: a first semiconductor substrate having a plurality of imaging sensors, the first semiconductor substrate having a first side and an opposing second side; a first interconnect structure formed on the first side of the first semiconductor substrate; a second semiconductor substrate having a logic circuit, the second semiconductor substrate having a third side and an opposing fourth side; a second interconnect structure formed on the third side of the second semiconductor substrate, wherein the first and the second semiconductor substrates are bonded together in a configuration that the first side of the first semiconductor substrate faces the third side of the second semiconductor substrate such that the first and second interconnect structures are sandwiched between the first and second semiconductor substrates; and a backside deep contact (BDCT) feature extended from the fourth side of the second semiconductor substrate through the third side of the second semiconductor substrate and the second interconnect structure, to the first interconnect structure, thereby electrically coupling the logic circuit to the image sensors.