Photoconductive type sensor and its driving method and apparatus

Details Photoconductive type sensor and its driving method and apparatus Photoconductive type sensor and its driving method and apparatus

1988-03-10

1989-07-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

357 30, H01J 4014

Patent

active

048453552

ABSTRACT:
A photoconductive type sensor which comprises a photoconductive layer having a photosensing region. A pair of main electrodes are provided which are disposed on the photosensing region of the photoconductive layer. The sensor also comprises a gate electrode for applying a bias voltage to the photosensing region. The gate electrode provides a bias of one polarity so as to suppress the generation of a channel in the photosensing region.

REFERENCES:
patent: 3813539 (1974-05-01), Sioma
patent: 4427990 (1984-01-01), Nishizawa
patent: 4549088 (1985-10-01), Ozawa
patent: 4604638 (1986-08-01), Matsuda
patent: 4685195 (1987-08-01), Szydlo et al.

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