Production method of scintillator array

Patent metadata

Field	Value
Publication number	US-9575188-B2
Application number	US-201314389150-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Mar 30, 2012
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

A method for producing a scintillator array comprising fixing a scintillator substrate to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with the scintillator substrate being thermally peelable; providing the scintillator substrate with lattice-patterned grooves to form pluralities of scintillator cells; filling gaps between the scintillator cells with a liquid hardening reflector resin; curing the liquid hardening reflector resin by heating to form a resin-hardened scintillator cell body; and then peeling the double-coated adhesive sheet from the resin-hardened scintillator cell body by heating.

First claim

What is claimed is:

1. A method for producing a scintillator array comprising the steps of
fixing a scintillator substrate to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with said scintillator substrate being thermally peelable;
providing said scintillator substrate with lattice-patterned grooves to form a scintillator substrate having lattice-patterned grooves for defining pluralities of scintillator cells;
filling said lattice-patterned grooves with a liquid hardening reflector resin;
curing said liquid hardening resin by heating to form a resin-hardened scintillator cell body; and then
peeling said double-coated adhesive sheet from said resin-hardened scintillator cell body by heating;
wherein a scintillator substrate provided with lattice-patterned, unpenetrating grooves is peeled from said support plate, annealed, and then fixed to a support plate again via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with said scintillator substrate being thermally peelable.

2. The method for producing a scintillator array according to claim 1 , wherein said lattice-patterned grooves penetrate the scintillator substrate.

3. The method for producing a scintillator array according to claim 1 , wherein lattice-patterned, unpenetrating grooves are formed such that connecting portions remain in said scintillator substrate; and wherein said connecting portions are removed after said liquid hardening resin filling said lattice-patterned grooves is cured by heating.

4. The method for producing a scintillator array according to claim 1 , wherein thermally peelable adhesive surfaces of adhesive sheets are attached to the entire side surfaces of said support plate, to which said scintillator substrate having lattice-patterned, penetrating or unpenetrating grooves is fixed, such that said adhesive sheets project upward from said support plate; and said liquid hardening resin is introduced into a frame formed by the upper extensions of said adhesive sheets, to fill gaps between said scintillator cells with said liquid hardening resin.

5. The method for producing a scintillator array according to claim 4 , wherein at least an adhesive surface of said adhesive sheet constituting said frame to be in contact with said liquid hardening resin is thermally peelable.

6. The method for producing a scintillator array according to claim 1 , wherein a frame constituted by the adhesive sheets is attached to said double-coated adhesive sheet, such that it surrounds said scintillator substrate having lattice-patterned, penetrating or unpenetrating grooves on said support plate, to which said scintillator substrate is fixed via said double-coated adhesive sheet; and said liquid hardening resin is introduced into said frame, to fill gaps between said scintillator cells with said liquid hardening resin.

7. The method for producing a scintillator array according to claim 1 , wherein both surfaces of said resin-hardened scintillator cell body are ground to form a scintillator cell array on which said scintillator cells are exposed; fixing said scintillator cell array to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with said scintillator cell array being thermally peelable; covering said scintillator cell array with a liquid hardening reflector resin; curing said liquid hardening resin by heating to form a resin-hardened scintillator cell array; and grinding a surface of said resin-hardened scintillator cell array to expose said scintillator cells.

8. The method for producing a scintillator array according to claim 1 , wherein an aspect ratio w/t of each scintillator cell is 5 or less.

9. The method for producing a scintillator array according to claim 1 , wherein said thermally peelable, double-coated adhesive sheet is foamed by heating, thereby becoming easily peelable.

10. A method for producing a scintillator array comprising the steps of
providing the scintillator substrate with lattice-patterned, unpenetrating grooves to form a scintillator substrate with lattice-patterned, unpenetrating grooves, in which pluralities of scintillator cells are integral via connecting portions;
fixing said scintillator substrate to the support plate with said lattice-patterned, unpenetrating grooves on the side of said double-coated adhesive sheet, via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with said scintillator substrate being thermally peelable;
removing said connecting portions to form a scintillator substrate having lattice-patterned, penetrating grooves;
filling said lattice-patterned, penetrating grooves with a liquid hardening reflector resin;
curing said liquid hardening resin by heating to form a resin-hardened scintillator cell body; and then
peeling said double-coated adhesive sheet from said resin-hardened scintillator cell body by heating.

11. The method for producing a scintillator array according to claim 10 , wherein said scintillator substrate is provided with lattice-patterned, unpenetrating grooves, and then annealed.

12. The method for producing a scintillator array according to claim 10 , wherein a jig having as large an opening as permitting said scintillator substrate with lattice-patterned, unpenetrating grooves to be fixed to said support plate in a planar direction is attached to a peripheral portion of an upper surface of said support plate; said scintillator substrate with lattice-patterned, unpenetrating grooves is adhered to said double-coated adhesive sheet exposed in the opening of said jig: and said connecting portions are removed from said scintillator substrate with lattice-patterned, unpenetrating grooves by grinding.

13. A method for producing a scintillator array comprising the steps of
fixing a scintillator substrate to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with said scintillator substrate being thermally peelable;
providing said scintillator substrate with lattice-patterned grooves to form a scintillator substrate having lattice-patterned grooves for defining pluralities of scintillator cells;
filling said lattice-patterned grooves with a liquid hardening reflector resin;
curing said liquid hardening resin by heating to form a resin-hardened scintillator cell body; and then
peeling said double-coated adhesive sheet from said resin-hardened scintillator cell body by heating, wherein said support plate has surface roughness Ra of 0.01-10 μm.

14. A method for producing a scintillator array comprising the steps of
fixing a scintillator substrate to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with said scintillator substrate being thermally peelable;
providing said scintillator substrate with lattice-patterned grooves to form a scintillator substrate having lattice-patterned grooves for defining pluralities of scintillator cells;
filling said lattice-patterned grooves with a liquid hardening reflector resin;
curing said liquid hardening resin by heating to form a resin-hardened scintillator cell body; and then
peeling said double-coated adhesive sheet from said resin-hardened scintillator cell body by heating, wherein said support plate has height unevenness of 0.01-100 μm.

Assignees

• Hitachi Metals Ltd

Inventors

• Nitta Hideo

Classifications

• B32B38/0012

  Mechanical treatment, e.g. roughening, deforming, stretching · CPC title

• G01T1/20 Primary

  with scintillation detectors · CPC title

• B32B2037/243

  Coating · CPC title

• G01T1/2002 Primary

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

• B32B2038/0016

  Abrading · CPC title