Large-format photosensitive device and a method of utilization

Details Large-format photosensitive device and a method of utilization Large-format photosensitive device and a method of utilization

1985-12-16

1989-01-17

James, Andrew J.

357 31, 357 32, 357 15, 357 2, H01L 2714

Patent

active

047990945

ABSTRACT:
A large-format photosensitive device for detection of radiographic images comprises a semiconductor substrate of lightly n-doped hydrogenated amorphous silicon. On one face of the substrate are supported rectangular picture frame-like pads disposed in a matrix array, each having a central opening and formed of material which provides a rectifying junction with the semiconductor substrate, a layer of insulating material, and a control grid capacitively coupled to the pads. On the other face of the substrate are supported an array of drain electrodes located opposite the central openings of the pads, ladder-type source electrodes which circumscribe the drains, a layer of insulating material, and a conductive pattern for interconnecting all of the drains in a common row of all the columns in the array.

REFERENCES:
patent: 3488508 (1970-01-01), Weimer
patent: 3935446 (1976-01-01), Michon
patent: 4146904 (1979-03-01), Baertsch et al.
patent: 4327291 (1982-04-01), Chapman et al.
patent: 4520380 (1985-05-01), Ovshinsky et al.
patent: 4583108 (1986-04-01), Sirieix
patent: 4630090 (1986-12-01), Simmons et al.

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