Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1995-09-05
1997-03-11
Glick, Edward J.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
25037008, 2502081, H01L 310224, G01T 124
Patent
active
056104049
ABSTRACT:
A flat panel radiation imaging device that exhibits reduced capacitive coupling between pixel photodiodes and readout data lines, and thus in operation has reduced phantom images and image artifacts, includes a ground plane electrode that is disposed between the substrate and the plurality of pixels arranged in an imaging array pattern. The ground plane electrode is a conductive material layer that is disposed in a continuous sheet underlying the imaging array pattern; alternatively, the ground plane is a patterned sheet of conductive material having data line cutout areas disposed so that no ground plane conductive material underlies or is closer than a lateral set off distance from data lines in the imaging array pattern. A patterned ground plane further may include pixel electrode cutout sections disposed such that ground plane conductive material underlies pixel electrodes in the imaging array pattern only by a selected overlap distance around the boundaries of the pixel electrode.
REFERENCES:
patent: 5313319 (1994-05-01), Salisbury
patent: 5389775 (1995-02-01), Kwasnick et al.
Application entitled, "Solid State Radiation Imager With Gate Electrode Plane Shield Wires," Ser. No. 08/523,323, filed Sep. 5, 1995.
Application entitled, "Solid State Fluoroscopic Radiation Imager With Thin Film Transistor Addressable Array," Ser. No. 08/174,921, Dec. 29, 1993.
General Electric Company
Glick Edward J.
Ingraham Donald S.
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