Patent ID: 7777186
Filing Date: 2010-08-17
Classification: H01L

Abstract:
1. An infrared focal plane array comprising: a support substrate transparent to optical radiation in a predetermined wavelength band; an array of pixels positioned on the support substrate, wherein a gap is present between adjacent pixels and the pixels are configured to detect optical radiation in the predetermined wavelength band; a read-out integrated circuit parallel to the support substrate comprising an array of pixel contacts positioned on a face of the read-out integrated circuit such that corresponding ones of the array of pixels and pixel contacts are aligned; a plurality of pixel interconnects comprising an array of bonding bumps connecting the aligned pixels and pixel contacts; and a patterned electrical insulator affixed to the face of the read-out integrated circuit and comprising a plurality of intersecting walls defining a plurality of cells, wherein each pixel interconnect is contained within an individual cell defined by the intersecting walls and the intersecting walls are dimensioned such that the patterned electrical insulator does not physically contact the support substrate, the array of pixels, or the pixel interconnects.