Patent ID: 8274057
Filing Date: 2012-09-25
Classification: G01T,H01L,H04N

Abstract:
1. A detection element comprising: a light emitting layer that emits light due to radiation being irradiated thereto; a semiconductor layer that generates charges due to incident light from the light emitting layer; a first electrode that applies a bias voltage to the semiconductor layer; a second electrode that collects charges generated at the semiconductor layer, and in which a voltage level changes so that a potential difference between the second electrode and the first electrode decreases when a charge amount of charges collected and accumulated increases; and a saturation prevention circuit connected to the second electrode, and through which the accumulated charges flow when the voltage level of the second electrode reaches a predetermined saturation prevention voltage level having the same polarity as the bias voltage and having an absolute value of the voltage level smaller than the voltage level of the bias voltage.