Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1996-06-26
1998-03-03
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
25037001, H01L 27144, H01L 3109
Patent
active
057238669
ABSTRACT:
A large area radiation detector (1) includes a volume of semiconductor material (24) that is responsive to ionizing radiation for generating charge carriers, a first electrode (26) coupled to one surface of the volume of semiconductor material, and a plurality of second electrodes (20, 22) coupled to a second surface of the volume of semiconductor material. Individual ones of the second electrodes are associated with an underlying region of the volume of semiconductor material for collecting charge carriers from the underlying region. The detector further includes circuitry (30, 31, 32) coupled to the plurality of second electrodes for summing charge carriers collected by the plurality of second electrodes to produce an output signal, and a mechanism for selectively decoupling individual ones of the second electrodes from the circuitry. In one embodiment the circuitry includes electrically conductive traces (16) that couple individual ones of the second electrodes to a summing junction (31), and the mechanism for selectively decoupling includes physically opening a trace to disconnect the second electrode from the summing junction. In a further embodiment the mechanism for selectively decoupling includes a semiconductor switch (34) that is coupled in series with each of the traces.
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Denson-Low W. K.
Hannaher Constantine
HE Holdings Inc.
Schubert W. C.
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