Patent ID: 9214592
Filing Date: 2015-12-15
Classification: H01L

Abstract:
1. A method of packaging a sensor chip that includes a substrate with front and back opposing surfaces, a plurality of photo detectors formed at the front surface, and a plurality of contact pads formed at the front surface which are electrically coupled to the photo detectors, the method comprising: providing a conductive crystalline handler having opposing first and second surfaces; forming a cavity into the first surface; forming a plurality of conductive elements each extending from the first surface, through the crystalline handler, to the second surface, wherein for each of the conductive elements, a dielectric layer is disposed between the conductive element and the conductive crystalline handler; providing a substrate having opposing top and bottom surfaces, wherein the substrate is optically transparent to at least one range of light wavelengths; forming a plurality of electrically conductive traces on the bottom surface and insulated from the substrate by a compliant dielectric material that is disposed only between the plurality of electrically conductive traces and the bottom surface; inserting the sensor chip in the cavity; bonding the substrate to the crystalline handler and the sensor chip such that: