Method of driving x-ray detector and x-ray detector using...

Details Method of driving x-ray detector and x-ray detector using... Method of driving x-ray detector and x-ray detector using...

2009-03-24

2011-12-06

Hannaher, Constantine (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

Reexamination Certificate

active

08071951

ABSTRACT:
In a method of driving an x-ray detector having a switching device connected to a light detecting pixel comprising a photodiode which detects an x-ray emitted from an x-ray generator and outputs an electrical signal corresponding to the x-ray, the method includes: receiving an x-ray with the photodiode during an x-ray detecting period to generate the electrical signal corresponding to the x-ray; turning on the switching device using a gate signal during a first gate turn-on period to transmit the electrical signal to an external component; providing a light to the photodiode during a first flash period of an offset control period; and turning on the switching device during a second gate turn-on period of the offset control period during which the light is not provided to the photodiode to maintain an electric potential at a coupling node disposed between the photodiode and the switching device at a predetermined level.

REFERENCES:
patent: 6980246 (2005-12-01), Ducourant et al.
patent: 1378942 (2004-01-01), None
patent: 1179741 (2007-09-01), None
patent: 1176814 (2008-05-01), None
Extended European Search Report for application No. 09000631.3-2202 dated Aug. 3, 2011.

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