Patent ID: 9525003
Filing Date: 2016-12-20
CPC Classification: H01L

Claim Text:
1. An apparatus comprising: a first substrate having an image sensor; a first interconnect structure disposed on the first substrate; a second substrate having a device, the second substrate disposed over the first substrate; a second interconnect structure formed on the second substrate and interfacing with the first interconnect structure; and a contact feature extending from the first substrate, through the first interconnect structure, and to the second interconnect structure to electrically couple the image sensor to the device, wherein the contact feature has a first width in the first substrate, a second width in the first interconnect structure, and a third width in the second interconnect structure, wherein the first, second, and third widths are different from each other, and wherein the first substrate has a first side facing away from the first interconnect structure and a second side facing the first interconnect structure, wherein the contact feature extends from the first side to the second side of the first substrate.