PROBLEM TO BE SOLVED: To provide a method of manufacturing a radiation image detection device, which is capable of easily forming a scintillator protective coat which covers a scintillator without breaking it and has a peripheral edge part brought into close contact with a substrate, and to provide the radiation image detection device.SOLUTION: A scintillator protective coat 23 covering a planar scintillator 20 provided on a photoelectric conversion panel 21: is brought into contact with the scintillator 20 and the photoelectric conversion panel 21 thanks to a plane member having a rugged shape on a surface thereof and has a rugged shape formed to follow the rugged shape of the plane member. A spacing S between adjacent concave parts of the rugged shape, a column diameter D of a columnar crystal 20a, and a width W of a peripheral edge part 23b satisfy a relation of D≤S≤W. A force is applied to respective front end parts 20c of the columnar crystals 20a from a substantially uniform direction, so that breakage is prevented. Concave portions of the peripheral edge part 23b are pressed by a strong force, so that the peripheral edge part 23b is brought into close contact with the photoelectric conversion panel 21.COPYRIGHT: (C)2015,JPO&INPIT【課題】シンチレータを破損させずに被覆するとともに、周縁部が基板に対して高い密着を有するシンチレータ保護膜を容易に形成することができる放射線画像検出装置の製造方法及びその放射線画像検出装置を提供する。【解決手段】光電変換パネル21上に設けられた平面状のシンチレータ20を覆うシンチレータ保護膜23は、表面に凹凸形状を有する平面部材によってシンチレータ20及び光電変換パネル21に密着され、平面部材の凹凸形状に沿う凹凸形状が形成されている。凹凸形状の凹部間の間隔S、柱状結晶20aの柱径D及び周縁部23bの幅Wは、「D≦S≦W」とされており、柱状結晶20aの各先端部20cにはほぼ均一な方向から力が加わるので破損が防止され、周縁部23bの凹部は強い力で押圧されるので、光電変換パネル21に密着する。【選択図】図4
