| 摘要 |
PURPOSE:To enable automatic sensitivity adjustment electrically by forming respectively a photoconductive material on a circuit element which has charge transferring function, and on the material a transparent electrode, and controlling the integrating period of light information obtained by photoelectric conversion caused by the potential applied to this electrode. CONSTITUTION:On a p type substrate 10, a source region 11, a potential well 12 and a gate electrode 13 all of n<+> type are formed, and on an insulator layer 15 formed over the substrate except the part of the source region 11, an electrode 16 electrically coupled with the source region 11 is formed as the electrode of a diode electrode and hole intercepting layer 17. On these electrode 16 and insulator layer 15, a photoconductive material 18 is formed, and further on it, a transparent electrode 19 is formed, and taking a solid-state element which has the photoconductive material 18 as its photodetector for incident rays as a unit, several number of them are connected on the substrate 10, and transmitting signal charges from the source region 11 to the n<+> region 12, the reading operation of light information to transfer these charges to an output part is executed. During the above process, the integrating period of light information obtained by photoelectric conversion caused by applying a pulse-shaped voltage to the electrode 19 from a circuit 20 is controlled, whereby the automatic adjustment of sensitivity is enabled electrically. |
