Patent ID: 9041840
Filing Date: 2015-05-26
Classification: H01L,H04N

Abstract:
1. An image sensor unit, comprising: a backside illuminated imager that contains an array of image pixels, wherein the imager integrated circuit has a front surface on which the array of image pixels is formed and a rear surface through which incident light enters the imager; an image co-processor stacked together with the backside illuminated imager; a permanent carrier affixed to the imager, wherein the permanent carrier has portions that define a cavity and has channels that pass between the cavity and peripheral regions of the permanent carrier, wherein the image co-processor is disposed in the cavity; and a printed circuit board on which the permanent carrier is mounted, wherein the printed circuit board has at least one fluid inlet and at least one fluid outlet through which cooling fluid passes, wherein the inlet, outlet, and the channels are configured to receive the cooling fluid through the inlet; pass the cooling fluid through at least a first one of the channels, past the image co-processor such that the cooling fluid absorbs heat from the image co-processor, and through at least a second one of the channels; and expel the cooling fluid through the outlet.