Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1994-06-28
1996-01-09
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
25037011, 250580, H01L 310264, G01T 1202, G01T 124
Patent
active
054830710
ABSTRACT:
A two-dimensional radiation detector for obtaining a radiographic image as converted into electric signals. The detector has a multi-layer structure including a scintilator, a translucent electrode film, a photoconductive film and a scan switch layer. The scan switch layer includes conductors arranged in matrix form and in contact with the photoconductive film, a plurality of FETs corresponding to the conductors arranged in matrix form, and a uniformly planar conductor for successively applying a bias voltage through the FETs to the matrix conductors row by row. Each FET has a drain electrode connected to one of the matrix conductors, a source electrode connected to the uniformly planar conductor, and a gate electrode connected to the drive circuit. The translucent electrode film includes column conductors corresponding to columns of the matrix conductors, each of the column conductors being connected to a signal reading line.
REFERENCES:
patent: 5182624 (1993-01-01), Tran et al.
V. Perez-Mendez, G. Cho, I. Fujieda, S. N. Kaplan, S. Qureshi and R. A. Street, "The Application of Thick Hydrogenated Amorphous Silicon Layers to Charged Particle and X-Ray Detection." Lawrence Berkeley Laboratory LBL-26998 Presented at the Materials Research Society Conference, San Diego, Calif., Apr. 24-28, 1989.
Katou Tutomu
Oikawa Shiro
Suzuki Shirou
Takemoto Takayuki
Tanioka Kenkichi
Hannaher Constantine
Nippon Hoso Kyokai
Shimadzu Corp.
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