Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1992-03-09
1993-08-31
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
257443, H01J 4014
Patent
active
052411699
ABSTRACT:
Disclosed is a photoelectric conversion device which is adapted to accumulate optically generated carriers in the control electrode region of a transistor and to read a signal on the basis of the carriers thus accumulated. This photoelectric conversion device is so designed that the substantial size of the control electrode region is augmented at the time of carrier accumulation. In this device, a region of the same conductivity type as the control electrode region is formed at the time of accumulation and is electrically connected to the control electrode region. During accumulation, carriers, generated by light, are accumulated in the above-mentioned region which is of the same conductivity type as the control electrode region. At the time of signal reading after accumulation, the above-mentioned region which is of the same conductivity type as the control electrode region is made to disappear and the carriers that have been accumulated therein are transferred to the control electrode region. Also, disclosed is an apparatus which is equipped with a photoelectric conversion device as described above.
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Canon Kabushiki Kaisha
Lee John R.
Nelms David C.
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