Patent ID: 7544947

Claim:
A method for cross-talk and back side shielding in a front side illuminated photo detector diode array, the method comprising the steps of: forming a matrix of scintillator crystals wherein each scintillator crystal is bonded to a photodiode wherein the matrix creates a septa between each scintillator crystal photodiode element and wherein each scintillator crystal photodiode element possesses a sidewall associated with each septa; connecting a processing circuitry to each photodiode directly via a pattern of electrical contacts; passivating each scintillator crystal photodiode element sidewall with an oxide; and filling the septa with a material possessing an atomic number sufficient to shield the processing circuitry from X-ray radiation, wherein the width of the material is less than the width of the septa thereby leaving an air gap between opposing sides of the material.