Patent ID: 8368027

Claim:
A radiation detection apparatus comprising a plurality of pixels each including a conversion element which converts incident radiation into a charge, a switching element which transfers the charge of the conversion element; a gate line connected to a gate of the switching element; and a signal line which is located to intersect with the gate line and connected to a source or drain of the switching element; and an interlayer insulation film disposed between the conversion element and the switching element and disposed between the conversion element and the signal line, wherein Cc+Ct≧∈ 0 ×∈×S/d is satisfied, where Cc is a coupling capacitance between the signal line and the gate line in one pixel, Ct is a coupling capacitance between the gate of the switching element and the source or drain of the switching element in one pixel, S is an overlapping area of the signal line and the conversion element in one pixel, d is a thickness of the interlayer insulation film, ∈ is a relative dielectric constant of the interlayer insulation film, and ∈ 0 is a vacuum dielectric constant.