Patent ID: 8481909

Claim:
A detection apparatus comprising: a plurality of conversion elements disposed in the form of a matrix on a substrate, wherein the conversion elements include a plurality of first electrodes corresponding to the respective conversion elements and separated away from each other, a second electrode extending over the plurality of conversion elements, and a semiconductor layer formed between the plurality of first electrodes and the second electrode extending over the plurality of conversion elements; a plurality of switch elements connected in a one-to-one manner to the respective first electrodes and disposed in the form of a matrix between the substrate and the plurality of conversion elements; a plurality of insulating layers disposed between the plurality of conversion elements and the plurality of switch elements, wherein the plurality of insulating layers include a plurality of first regions located immediately below the respective first electrodes and also includes a second region located between the first regions; and a third electrode supplied with a potential that sets a potential of a part where the second region of the plurality of insulating layers is in contact with the semiconductor layer such that the potential of the part is between a potential of the second electrode and a potential of the first electrode, wherein the third electrode is disposed in the second region and between adjacent two insulating layers of the plurality of insulating layers.