Scintillator panel and method for manufacturing scintillator panel

Patent metadata

Field	Value
Publication number	US-9684082-B2
Application number	US-201314432300-A
Country	US
Kind code	B2
Filing date	Sep 18, 2013
Priority date	Oct 3, 2012
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

The present invention provides a scintillator panel including: a plate-like substrate; a barrier rib provided on the substrate; and a scintillator layer including a phosphor filled in cells divided by the barrier rib, wherein the barrier rib is formed of a material which is mainly composed of a low-melting-point glass containing 2 to 20% by mass of an alkali metal oxide, a value obtained by dividing a top width Lt of the barrier rib or a 90%-height width L90 of the barrier rib by a half-value width Lh of the barrier rib is 0.45 to 1, and a value obtained by dividing a bottom width Lb of the barrier rib or a 10%-height width L10 of the barrier rib by the half-value width Lh is 1 to 3.

First claim

The invention claimed is:

1. A scintillator panel comprising: a plate-like substrate; a barrier rib provided on the substrate; and a scintillator layer comprising a phosphor filled in cells divided by the barrier rib, wherein
the barrier rib is formed of a material which is mainly composed of a low-melting-point glass containing 2 to 20% by mass of an alkali metal oxide,
a value obtained by dividing a top width Lt of the barrier rib or a 90%-height width L90 of the barrier rib by a half-value width Lh of the barrier rib is 0.45 to 1, and
a value obtained by dividing a bottom width Lb of the barrier rib or a 10%-height width L10 of the barrier rib by the half-value width Lh is 1 to 3,
wherein the pitch P of the barrier rib is 120 to 240 μm, the half-value width Lh is 10 to 40 μm, and the height H of the barrier rib is 200 to 800 μm.

2. The scintillator panel according to claim 1 , wherein the half-value width Lh is 10 to 30 μm, and the height H of the barrier rib is 200 to 500 μm.

3. The scintillator panel according to claim 1 , wherein a line that connects the end of the central portion of the barrier rib to the end of the bottom surface of the barrier rib at a cross section perpendicular to the longitudinal direction in the barrier rib is a curved line.

4. The scintillator panel according to claim 1 , wherein a reflecting film is formed on a surface of the barrier rib.

5. A method for manufacturing the scintillator panel according to any one of claim 1 , 2 , 3 , or 4 , the method comprising:
forming a photosensitive paste coating film by applying onto a substrate a photosensitive paste which contains a low-melting-point glass and a photosensitive organic component;
exposing the obtained photosensitive paste coating film to light in a predetermined pattern;
dissolving and removing a part of the exposed photosensitive paste coating film which is soluble in a developer;
heating the photosensitive paste coating film pattern after development to a firing temperature of 500° C. to 700° C. to remove the organic component and soften and sinter the low-melting-point glass and thereby forming a barrier rib; and
filling a phosphor.

6. A scintillator panel comprising: a plate-like substrate; a barrier rib provided on the substrate; and a scintillator layer comprising a phosphor filled in cells divided by the barrier rib, wherein
the barrier rib is formed of a material which is mainly composed of a low-melting-point glass containing 2 to 20% by mass of an alkali metal oxide,
a value obtained by dividing a top width Lt of the barrier rib or a 90%-height width L90 of the barrier rib by a half-value width Lh of the barrier rib is 0.45 to 1, and
a value obtained by dividing a bottom width Lb of the barrier rib or a 10%-height width L10 of the barrier rib by the half-value width Lh is 1 to 3,
wherein the height H of the barrier rib is 200 to 800 μm.

Assignees

• Toray Industries

Inventors

• Okamura Masaki
• Iguchi Yuichiro
• Kinoshita Hideki

Classifications

• G01T1/202

  the detector being a crystal · CPC title

• G03F7/40

  Treatment after imagewise removal, e.g. baking · CPC title

• G21K2004/08

  with a binder in the phosphor layer · CPC title

• G21K4/00 Primary

  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) · CPC title

• G01T1/2002 Primary

  Optical details, e.g. reflecting or diffusing layers · CPC title