Scintillator panel and production method thereof, flat panel detector and production method thereof

A production method of a scintillator panel comprising a plurality of layers, the layers arranged sequentially in the order of a support, a phosphor layer and a protective layer, the method comprising:

• forming the phosphor layer on the support;
• and
• cutting the support by exposing a reverse side of the support, on which the phosphor layer is not provided, to a laser;
• wherein
• the phosphor layer comprises columnar crystals, the phosphor layer having a bottom surface facing the support, a top surface opposite the bottom surface and side surfaces,
• the columnar crystals, at an end of the phosphor layer, have side surfaces with melted areas which are produced by the cutting treatment, and
• the melted areas account for not less than 1% and not more than 40% of an area of all of the side surfaces of the columnar crystals.