Patent Number: 
Section: claims

1. A scintillator panel comprising: a plate-like substrate; a grid-like barrier rib provided on the substrate; and a scintillator layer containing a phosphor filled in cells divided by the barrier rib, whereinthe barrier rib is formed of a material which is mainly composed of a low-melting-point glass, andthe substrate is a polycrystalline substance produced by firing a raw material containing a fine powder of a ceramic selected from the group consisting of alumina, aluminum nitride, mullite and steatite,wherein the substrate has a reflectivity of light having a wavelength of 550 nm of 40% or more. 2. The scintillator panel according to claim 1, wherein the low-melting-point glass contains 2 to 20% by mass of an alkali metal oxide. 3. The scintillator panel according to claim 1, wherein the thickness of the substrate is 0.1 to 0.7 mm. 4. A method for manufacturing a scintillator panel comprising:forming a photosensitive paste coating film by applying onto a substrate a photosensitive paste containing a low-melting-point glass powder and a photosensitive organic component;exposing the obtained photosensitive paste coating film to light through a photomask having a predetermined opening;dissolving and removing a part of the exposed photosensitive paste coating film which is soluble in a developer to obtain a photosensitive paste coating film pattern;heating the photosensitive paste coating film pattern after development to 500 to 700° C. to remove the organic component and soften and sinter the low-melting-point glass and thereby forming a barrier rib; andfilling a phosphor in cells divided by the barrier rib,wherein the scintillator panel comprises a plate-like substrate, a grid-like barrier rib provided on the substrate, and a scintillator layer containing a phosphor filled in cells divided by the barrier rib, andwherein the plate-like substrate is a polycrystalline substance produced by firing a raw material containing a fine powder of a ceramic selected from the group consisting of alumina, aluminum nitride, mullite, and steatite,wherein the substrate has a reflectivity of light having a wavelength of 550 nm of 40% or more.