SOLID-STATE IMAGER AND X-RAY CT APPARATUS INCLUDING SAME

摘要

A solid-state imager has a structure for capturing a high-resolution image even if any of the read wiring and the column-selection wiring is disconnected. The solid-state imager (1) comprises a light-receiving part (10) having MOEi>N pixel portions (P1,1 to PM,N) two-dimensionally arrayed in a matrix of M lines and N columns. The pixel portion (Pm,n) of the light-receiving part (10) includes a photodiode (PD) producing charge the amount of which corresponds to the intensity of the incident light and a read switch (SW1) connected to the photodiode (PD). The pixel portion (Pm,n) occupies a generally square area, and most of the area is the area of the photodiode (PD). A field-effect transistor serving as the read switch (SW1) is fabricated in one corner of the area. A channel stopper (CS) is continuously formed in every area sandwiched by pixel portions. A dummy photodiode (PD1) is so fabricated as to be surrounded by the channel stopper (CS) in any area surrounded by any 2OE pixel portions adjacentto one another.