PROBLEM TO BE SOLVED: To provide a radiation image detector having excellent sensitivity and durability.SOLUTION: A radiation image detector 1 comprises: a phosphor 10 which contains a fluorescent substance emitting fluorescence by radiation exposure and a thin film type sensor part 11 which adjoins a radiation incidence side of the phosphor and is supported by the phosphor, and where a plurality of photoelectric conversion elements 26 for detecting fluorescence generated on the phosphor are two-dimensionally disposed. The sensor part provided on a surface facing the phosphor has: a connection part 38 which is electrically connected with each of the plurality of the photoelectric conversion elements and a wiring member 39 which is connected to the connection part. The radiation image detector 1 further comprises: a first protection film 44 which covers at least the connection part to which the wiring member is connected, excluding the back surface of the sensor part and a second protection film 45 which has a moistureproof property for covering at least a part corresponding to the connection part, on the back surface of the sensor part.COPYRIGHT: (C)2012,JPO&INPIT【課題】感度及び耐久性に優れる放射線画像検出装置を提供する。【解決手段】放射線画像検出装置1は、放射線露光によって蛍光を発する蛍光物質を含有した蛍光体10と、前記蛍光体の放射線入射側に隣設されて該蛍光体によって支持され、前記蛍光体に生じた蛍光を検出する複数の光電変換素子26が2次元状に配設された薄膜型のセンサ部11と、を備え、前記センサ部は、前記蛍光体と対向する表面に設けられ、前記複数の光電変換素子の各々と電気的に接続された接続部38、及び前記接続部に接続された配線部材39と、を有しており、前記センサ部の裏面を除き、少なくとも前記配線部材が接続された前記接続部を被覆する第1の保護膜44と、前記センサ部の裏面において、少なくとも前記接続部に対応する部分を被覆する防湿性を有する第2の保護膜45と、を更に備える。【選択図】図7
