Patent ID: 8389322

Claim:
A radiation detector comprising: a photodiode array comprising: a semiconductor substrate, wherein a plurality of photodiodes are formed in array form on a surface onto which light to be detected is made incident, and the semiconductor substrate has penetrating wirings, which pass through from the incidence surface side to the back surface side, formed for the photodiodes; and a transparent resin film, which covers at least the regions at which the photodiodes are formed and transmits the light to be detected, is disposed on the incidence surface side of the semiconductor substrate, the transparent resin film functioning as a cushion layer protecting the regions at which the photodiodes are formed, wherein the thickness of the transparent resin film is within the range of 1 to 50 μm; a scintillator panel, mounted to the side of the photodiode array onto which the light to be detected is made incident and emits light due to incident radiation, wherein a surface of the transparent resin film onto which the scintillator panel is mounted is flat; and an optical resin transmitting the light emitted from the scintillator panel, wherein the scintillator panel is mounted to the flat surface via the optical resin.