PROBLEM TO BE SOLVED: To suppress a contact between adjacent columnar crystals in a configuration in which an interval between the adjacent columnar crystals of a scintillator is changed when a load is applied to a top board of a housing.SOLUTION: After a scintillator 34 including a columnar crystal region is formed on a deposition substrate 20, the deposition substrate 20 is bent (refer to (A)) in such a manner that a scintillator forming surface side of the deposition substrate 20 is protruded, such that an average interval of the adjacent columnar crystals at a periphery of the tip ends of the columnar crystals is formed larger than an average interval of the adjacent columnar crystals at the periphery of the bases of the columnar crystals. When capturing a radiation image, a load is applied to the top board 16 of an electronic cassette 10 and the load is transmitted (refer to (B)) to the scintillator 34 and the deposition substrate 20 via a radiation detecting unit 42 so as to suppress the contact between the adjacent columnar crystals even if the average interval of the columnar crystals is decreased at the periphery of the tip ends of the columnar crystals.COPYRIGHT: (C)2012,JPO&INPIT【課題】筐体の天板に荷重が加わるとシンチレータの隣り合う柱状結晶の間隔が変化する構成において、隣り合う柱状結晶が接触することを抑制する。【解決手段】柱状結晶領域を有するシンチレータ34を蒸着基板20に形成した後に、蒸着基板20のうちシンチレータ形成面側が凸となるように蒸着基板20を湾曲させる((A)参照)ことで、柱状結晶の先端部付近における隣り合う柱状結晶の平均間隔を、柱状結晶の基部付近における隣り合う柱状結晶の平均間隔よりも大きくしておく。これにより、放射線画像の撮影時に電子カセッテ10の天板16に荷重が加わり、この荷重が放射線検出部42を介してシンチレータ34及び蒸着基板20に加わる((B)参照)ことで、柱状結晶の先端部付近における隣り合う柱状結晶の平均間隔が小さくなった場合にも、隣り合う柱状結晶が接触することが抑制される。【選択図】図2
