Patent ID: 7067817

Claim:
A radiation image sensor in which an image sensor assembly is placed on a mount substrate, wherein said image sensor assembly comprises: a sensor substrate of flat plate shape having a first surface and a second surface as front and back sides; a light receiving portion comprising a plurality of photoelectric conversion elements two-dimensionally arranged on said first surface of said sensor substrate and in proximity to at least one edge thereof; a scintillator formed on at least a surface of said light receiving portion, and outputting light of a wavelength that can be detected by said photoelectric conversion elements, in accordance with an incident radiation; a resin layer placed in a surrounding area around said scintillator except for the edge to which said light receiving portion is in proximity, on said first surface of said sensor substrate; and a protective film continuously and integrally covering a region from a surface of said scintillator via a side wall part of said sensor substrate on a side of the edge to which said light receiving portion is in proximity, to said second surface, and having a peripheral part fixed on sides except for the edge to which said light receiving portion is in proximity, by said resin layer, wherein said protective film on said second surface is sandwiched between said mount substrate and said sensor substrate so as to be fixed.