Patent ID: 9613992
Date: 2017-04-04
CPC Classifications: G01T,H01L

Claim:
1. A detector module for detecting photons, said detector module comprising: a direct conversion detector formed from a semiconductive material, the detector having a first surface, an opposing second surface, and a plurality of sidewalls extending between the first and second surfaces; and a guard band coupled to the sidewalls, the guard band including a conductive layer and two insulation layers, the conductive layer confined between the two insulation layers, wherein the guard band is disposed around an exterior of the sidewalls, surrounding the detector, with one of the two insulation layers contacting the sidewalls, wherein the semiconductive material is isolated from the conductive layer of the guard band, the guard band having a length that extends along a circumference of the detector, the guard band having a width that is greater than a thickness of the detector such that an upper rim segment of the guard band projects beyond the first surface of the detector, the upper rim segment being folded over a peripheral region of the first surface along the circumference of the detector, the guard band configured to reject electrons from the sidewalls to reduce electron-hole (e-h) recombinations proximate to the edges of the detector, the guard band configured to continuously expose the one of the two insulation layers contacting the sidewalls to the sidewalls along the peripheral region of the first surface and to expose the one of the two insulation layers to at least a portion of an area of the first surface.