| 摘要 |
PURPOSE:To facilitate reading storage modes and increase sensitivity and read ing speed by providing a photosensitive element, which is composed of two photodiodes connected in series with the polarities opposite to each other, be tween the first and the second conductive lines at the cross point of those lines. CONSTITUTION:Two photodiodes 4 are biased in reverse to each other and photoelectric conversion is carried out by the photodiodes and signal charge is stored. When a vertical scanning switch 5 is connected to a VT source and further a horizontal scanning switch 6 is connected to an output circuit 8, the signal charge stored in the photodiodes 4 at the cross point of two signal lines is read by the output circuit 8. Therefore, if the horizontal scanning switches 6 are connected to the output circuit 8 successively and also vertical scanning switches 5 are connected to the VT source successively, signal charges stored in the photodiodes 4 arranged two-dimensionally can be read successively. As storage mode type signals can be read like this, higher speed reading with higher sensitivity can be realized. |
