Abstract: According to one embodiment, a radiation detector comprises an array substrate having thereon a photoelectric conversion element for converting fluorescence into an electrical signal and having the outermost layer covered with a protective film, a scintillator layer provided on the protective film and converting incident radiation into fluorescence, and a reflective layer filmed by coating and drying paste-like material containing light-scattering particles and a binder provided on the scintillator layer, wherein the protective film is made of a thermoplastic resin having a softening point not higher than the film formation temperature of the scintillator layer and extending on the array substrate over an area of the reflective layer.

Abstract: According to one embodiment, a radiation detector comprises an array substrate having thereon a photoelectric conversion element for converting fluorescence into an electrical signal and having the outermost layer covered with a protective film, a scintillator layer provided on the protective film and converting incident radiation into fluorescence, and a reflective layer filmed by coating and drying paste-like material containing light-scattering particles and a binder provided on the scintillator layer, wherein the protective film is made of a thermoplastic resin having a softening point not higher than the film formation temperature of the scintillator layer and extending on the array substrate over an area of the reflective layer.

Abstract: An image display apparatus includes two substrates arranged to face each other with a gap therebetween, and a sealing portion which seals predetermined positions of the substrates and defines a closed space between the two substrates. The sealing portion includes a low-melting point metal material applied along the predetermined positions, and a composite material layer provided between a surface of the substrate and the low-melting point metal material and including metal powder material and frit glass. The metal powder material has a bonding property to glass, an affinity to the low-melting point metal material, and a solubility of less than 10% at a temperature of 500° C. or less with respect to the low-melting point metal material to be melted.

Abstract: A flat image display device includes two glass substrates located opposite each other with a gap therebetween and a seal portion which seals a predetermined position on the glass substrates and defines a sealed space between the two glass substrates. The seal portion having a low-melting-point metal filled along the predetermined position and a metal layer provided between respective surfaces of the glass substrates and low-melting-point metal and formed of a metal which has connectivity to glass, affinity to the low-melting-point metal, and a solubility of less than 1% to the low-melting-point metal to be melted at a temperature of 500° C. or less.

Abstract: A flat image display device includes two substrates located opposite each other with a gap therebetween and a vacuum seal portion which seals a predetermined position on the substrates and defines a sealed space. The vacuum seal portion has a sealing layer which is formed of a sealing material filled along the predetermined position. The sealing material having a melting point of 400° C. or less and a rate of contraction during solidification ranging from +0.5% to ?2.5%.