SCINTILLATOR PANEL AND RADIATION DETECTOR

• US 20100006762A1
• Filed: 09/23/2009
• Published: 01/14/2010
• Est. Priority Date: 03/27/2007
• Status: Active Grant

• Current Assignee: Canon Electron Tubes & Devices Co., Ltd. (Canon Inc.)
• Original Assignee: Toshiba Electron Tubes & Devices Co. Ltd. (Canon Inc.), Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Horiuchi, Hiroshi, Yoshida, Atsuya
• Granted Patent: US 9,158,009 B2
• Time in Patent Office: Days
• US Class Current: 250/361.R
• CPC Class Codes: C09K 11/613 with alkali or alkakine earth metals
• CPC Class Codes: C09K 11/7733 with alkali or alkaline earth metals
• CPC Class Codes: G01T 1/202 the detector being a crystal
• CPC Class Codes: G21K 2201/06 using diffractive, refractive or reflecting elements
• CPC Class Codes: G21K 4/00 Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens photographic processes using X-ray intensifiers G03C5/17; discharge tubes comprising luminescent screens H01J1/62; cathode ray tubes for X-ray conversion with optical output H01J31/50

Abstract

A reflective resin sheet is bonded to one face of a supporting substrate transmitting a radiation ray and a resin sheet of the same material as that of the reflective resin sheet to the other face of the supporting substrate. A phosphor layer converting a radiation ray into visible light is formed additionally on the reflective resin sheet formed on one face of the supporting substrate. The phosphor layer is enclosed with an additional moisture-proof layer and the reflective resin sheet. It is possible to obtain a scintillator panel higher in sensitivity characteristics, stabilized in quality and more cost-effective by placing the reflective resin sheet between the supporting substrate and the phosphor layer.

Claims

1. A scintillator panel comprising:

a supporting substrate which transmits a radiation ray;

a reflective resin sheet formed on one face of the supporting substrate; and

a phosphor layer which is formed on the reflective resin sheet on one face of the supporting substrate and converts the radiation ray into visible light.

2. The scintillator panel according to claim 1, wherein a resin sheet is formed on the other face of the supporting substrate opposite to the face carrying the formed phosphor layer.

3. The scintillator panel according to claim 2, wherein the reflective resin sheet and the resin sheet are made of the same material.

4. The scintillator panel according to claim 1, further comprising a moisture-proof layer which covers the phosphor layer,

wherein the moisture-proof layer and the reflective resin sheet enclose the phosphor layer.

5. The scintillator panel according to claim 1, wherein a material for the reflective resin sheet is a polyethylene terephthalate foam.

6. The scintillator panel according to claim 1, wherein the material for the reflective resin sheet is a TiO₂ grain-dispersed polyethylene terephthalate.

7. A radiation detector comprising:

an image sensor having a plurality of photoreceptor elements arranged thereon; and

the scintillator panel according to claim 1 in combination of the image sensor.