Minimizing the effect of directly converted x-rays in x-ray...

Details Minimizing the effect of directly converted x-rays in x-ray... Minimizing the effect of directly converted x-rays in x-ray...

2006-12-19

2006-12-19

Potter, Roy (Department: 2822)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S291000, C257SE31054

Reexamination Certificate

active

07151287

ABSTRACT:
In one embodiment, an image sensor for an x-ray imager includes a photodiode and a readout circuit. A deep well formed below the readout circuit may be configured as a diode to drain away parasitic electrons, which would otherwise induce noise in images. The parasitic electrons may be drained away to a power supply or a measuring circuit for dosimetrie purposes, for example.

REFERENCES:
patent: 6545303 (2003-04-01), Scheffer
patent: 6608337 (2003-08-01), Hynecek
patent: 6683360 (2004-01-01), Dierickx
patent: 6686220 (2004-02-01), Rhodes et al.
patent: 6690074 (2004-02-01), Dierickx
patent: 6815791 (2004-11-01), Dierickx
patent: 6838714 (2005-01-01), Rhodes et al.

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