Patent ID: 8450720
Filing Date: 2013-05-28
Classification: B82Y,H01L

Abstract:
1. A frontside-illuminated inverted quantum well infrared photodetector focal plane array comprising: a plurality of pyramidal quantum well stacks comprising quantum well facets and a plurality of alternating quantum well layers and barrier layers, wherein each quantum well stack has a frontside and a backside; a plurality of frontside common electrical contacts coupled to the frontside of the plurality of pyramidal quantum well stacks; a transparent substrate bonded to the frontside of the plurality of pyramidal quantum well stacks and the plurality of frontside common electrical contacts; a plurality of backside electrical contacts coupled to the backside of plurality of pyramidal quantum well stacks; and a read-out integrated circuit assembly comprising a read-out integrated circuit substrate and a plurality of electrical contacts, wherein the read-out integrated circuit assembly is bonded to the backside electrical contacts of the pyramidal quantum well stack by a plurality of indium bonding bumps.