# US 7,741,619 B2 · Scintillator panel for radiation, and flat panel detector

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- Number: US 7,741,619 B2
- Document ID: US7741619B2
- Status: Granted
- Kind: B2
- Application number: 12/217,535
- Filed: 2008-07-07
- Published: 2009-01-22
- Granted: 2010-06-22
- Earliest claimed: 2007-07-18
- Assignees: Konica Minolta Medical & Graphic, Inc.
- Inventors: Mitsuru Sekiguchi; Takehiko Shoji
- Web page: https://patentgrep.com/patent/US7741619B2

## CPC

- G01T 1/202: the detector being a crystal
- 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)
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)
- G21K: HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES

## Abstract

An objective is to provide a flat panel detector exhibiting high durability and less noise, which is fitted with a scintillator for radiation exhibiting high emission efficiency, wherein the scintillator is easy to be manufactured because of the simple structure. Also disclosed is a scintillator panel for radiation possessing a radiotransparent substrate and provided thereon, a phosphor layer from which light is emitted by exposing the substrate to radiation and a reflective film at which light from the phosphor layer is reflected, wherein the reflective film provided between the substrate and the phosphor layer possesses a multilayer film composed of at least two dielectric layers exhibiting a high reflectivity.

## Claims

### Claim 1

A scintillator panel for radiation comprising a radiotransparent resin substrate and provided thereon, a phosphor layer from which light is emitted by exposing the substrate to radiation and a reflective film at which light from the phosphor layer is reflected,
wherein the reflective film is provided between the substrate and the phosphor layer, and is brought into direct contact with the phosphor layer, the reflective film comprising a multilayer film composed of at least two dielectric layers exhibiting a high reflectivity.

### Claim 2 (depends on 1)

A flat panel detector comprising he scintillator panel of claim 1.

### Claim 3 (depends on 1)

The scintillator panel of claim 1
wherein the radiotransparent resin substrate is a radiotransparent polyimide substrate.

### Claim 4 (depends on 1)

The scintillator panel of claim 1
wherein the radiotransparent resin substrate is a radiotransparent polyethylene terephthalate substrate.

### Claim 5

A scintillator panel for radiation comprising a radiotransparent substrate and provided thereon, a phosphor layer from which light is emitted by exposing the substrate to radiation and a reflective film at which light from the phosphor layer is reflected,
wherein the reflective film is provided on a substrate surface side opposite the phosphor layer, the reflective film comprising a multilayer film composed of at least two dielectric layers exhibiting a high reflectivity.

### Claim 6 (depends on 5)

The scintillator panel of claim 5,
wherein the reflective film selectively reflects light having a wavelength of 350-800 nm.

### Claim 7 (depends on 6)

The scintillator panel of claim 6,
wherein the reflective film selectively reflects light having a wavelength of 400-700 nm.

### Claim 8 (depends on 5)

A flat panel detector comprising the scintillator panel of claim 5.