Patent ID: 9373660
Filing Date: 2016-06-21
CPC Classification: H01L

Claim Text:
1. A method of forming an image sensor package, comprising: providing a first substrate with opposing first and second surfaces and a plurality of image sensors formed thereon, wherein each image sensor includes a plurality of photo detectors formed on or in the first substrate and a plurality of first contact pads formed at the first surface of the first substrate which are electrically coupled to the photo detectors; mounting a second substrate with opposing first and second surfaces to the first substrate by attaching the second substrate first surface to the first substrate first surface; forming trenches into the second substrate second surface that extends partially through the second substrate, wherein each of the trenches is disposed over one or more of the first contact pads; forming a plurality of openings each extending from one of the trenches to the second substrate first surface and exposing one of the first contact pads; forming a plurality of conductive traces each extending from one of the first contact pads and through one of the plurality of openings; dicing the mounted first and second substrates into multiple separate image sensor assemblies along dicing lines in-between the image sensors, wherein each of the image sensor assemblies includes one of the image sensors; mounting one of the image sensor assemblies to a printed circuit board, wherein the printed circuit board includes a third substrate with opposing first and second surfaces, a cavity formed into the third substrate first surface, an opening extending from the cavity to the third substrate second surface, one or more circuit layers, and a plurality of second contact pads electrically coupled to the one or more circuit layers, wherein the first substrate of the one image sensor assembly is at least partially disposed in the cavity; and electrically connecting each of the plurality of conductive traces of the one image sensor assembly to one of the second contact pads.