Patent ID: 9476991
Filing Date: 2016-10-25
CPC Classification: G01T,H01L

Claim Text:
1. An indirect X-ray sensor, comprising: a silicon wafer having a front side and a back side opposite the front side, the silicon wafer having an array of photodiodes thereon with each of the photodiodes having a contact on the front side of the silicon wafer and self-aligned with a respective grid hole of an array of grid holes that are on the back side of the silicon wafer, each of the grid holes filled with a scintillator configured to convert beams of X-ray into light; and one or more silicon dies with an array of photo-sensing circuits, each of the photo-sensing circuits having a contact at a top surface of the one or more silicon dies, wherein the contact on each of the photodiodes is aligned and bonded to the contact of a respective photo-sensing circuit of the array of photo-sensing circuits of the one or more silicon dies, wherein light converted from beams of X-ray by the scintillators within the grid holes is converted into electron-hole pairs by the photodiodes altering a voltage across the photodiodes, and wherein the voltage is sensed by the photo-sensing circuits through the contacts on the photodiodes and the contacts on the photo-sensing circuits.