Patent Number: 
Section: claims

1. A radiation detector comprising:a scintillator panel having a scintillator layer; anda photoelectric conversion panel having a support substrate, a light receiving element, and a switching element,wherein:the light receiving element faces the scintillator layer,the photoelectric conversion panel has flexibility,the scintillator layer is sealed with a moisture-proof material,the moisture-proof material includes a first moisture-proof layer and a second moisture-proof layer,the first moisture-proof layer is provided on a surface of the scintillator panel which is opposite to a surface of the scintillator panel facing the photoelectric conversion panel, anda rigid plate is provided on a surface of the photoelectric conversion panel which is opposite to a surface of the photoelectric conversion panel facing the scintillator panel, the rigid plate functioning as the second moisture-proof layer. 2. The radiation detector according to claim 1, wherein at least one of the first moisture-proof layer and the second moisture-proof layer is an electrically conductive layer. 3. The radiation detector according to claim 1, wherein the rigid plate is a bottom plate of a housing which houses the radiation detector. 4. A radiation detector comprising:a scintillator panel having a scintillator layer; anda photoelectric conversion panel having a support substrate, a light receiving element, and a switching element,wherein:the light receiving element faces the scintillator layer,the photoelectric conversion panel has flexibility,the scintillator layer is sealed with a moisture-proof material,the moisture-proof material includes a first moisture-proof layer and a second moisture-proof layer,a rigid plate is provided on a surface of the scintillator panel which is opposite to a surface of the scintillator panel facing the photoelectric conversion panel, the rigid plate functioning as the first moisture-proof layer, andthe second moisture-proof layer is provided on a surface of the photoelectric conversion panel which is opposite to a surface of the photoelectric conversion panel facing the scintillator panel. 5. The radiation detector according to claim 4, wherein at least one of the first moisture-proof layer and the second moisture-proof layer is an electrically conductive layer. 6. The radiation detector according to claim 4, wherein the rigid plate is a top plate of a housing which houses the radiation detector.