Light sensitive screen

Details Light sensitive screen Light sensitive screen

1981-04-24

1983-12-06

LaRoche, Eugene R.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

2525011, 313386, 313388, 357 31, H01J 2945

Patent

active

044196040

ABSTRACT:
Disclosed is a light sensitive screen including at least a light-transmitting conductive film and a photoconductive layer, the light-transmitting conductive film being arranged on a side of incidence of light, characterized in that the photoconductive layer is constructed of a single layer or a plurality of layers of one or more photoconductive substances, at least one of such photoconductive substance layers being formed of an amorphous silicon material which contains at least 5 atomic-% to 30 atomic-% of hydrogen, whose optical forbidden band gap is 1.65 eV to 2.25 eV and whose peak component in an infrared absorption spectrum at a wave number of 2,100 cm.sup.-1 is greater than that at a wave number of 2,000 cm.sup.-1. Various characteristics of an imaging device provided with the light sensitive screen, such as dark current, lag and after image characteristics, are improved.

REFERENCES:
patent: 3890524 (1975-06-01), Watanabe
patent: 4128844 (1978-12-01), Illenberger
patent: 4147667 (1979-04-01), Chevallier
patent: 4255686 (1981-03-01), Maruyama et al.
patent: 4360821 (1982-11-01), Tsukada et al.

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