Scintillator panel and radiation detector

• US 9,158,009 B2
• Filed: 09/23/2009
• Issued: 10/13/2015
• 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
• Primary Examiner(s): Lindsay, Jr., Walter L
• Assistant Examiner(s): Eley, Jessica L
• Application Number:
  US12/565,324
• Publication Number:
  US 20100006762A1
• Time in Patent Office: 2,211 Days
• Field of Search: 250/361.R, 250/484.4, 250/487.1
• US Class Current: 1/1
• 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 directly on top of one face of the supporting substrate, the reflective resin sheet having a single layer made from foamed resin; and

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

2. 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.

3. A scintillator panel comprising:

a supporting substrate which transmits a radiation ray;

a reflective resin sheet formed on at least one face of the supporting substrate, the supporting substrate being made of carbon fiber-reinforced plastic (CFRP) impregnated with thermosetting resin, the reflective resin sheet having a single layer, the single layer being an expanded resin layer or dispersed with a grain of heterogeneous substance different from the resin in the resin sheet; 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,

wherein the reflective resin sheet is bonded by resin, which is originally impregnated in a base material of CFRP before heat curing, to the CFRP supporting substrate.

4. A radiation detector comprising:

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

the scintillator panel according to claim 3 in combination of the image sensor.