Patent ID: 7173294
Filing Date: 2007-02-06
Classification: H01L

Abstract:
1. A charge-coupled imaging device which processes optical input signals into electronic output CCD signals while minimizing contamination by gamma rays, said charge-coupled imaging device comprising: a substrate, which has an optical input port side which receives the optical input signals; an electronic shutter implant layer which controls a flow of photoelectrons created by the optical input signals from the substrate with a controllable flow of output carriers; an array of pixel elements, each having a charge storage region which receives the flow of output carriers from the electronic shutter, and having a set of charge coupled device gate terminals that output an electronic CCD signal in response to the output carriers from the electronic shutter; and a buried channel layer which is fabricated in the substrate between the electronic shutter and the set of charge-coupled devices gate terminals that are constructed on a dielectric barrier such that Compton scattering occurs in gamma rays that accompany the optical input signal to create a drainable Compton charge to eliminate contaminating effects of gamma rays.