Radiation detection apparatus, radiation imaging system, and manufacturing method

Patent metadata

Field	Value
Publication number	US-9971043-B2
Application number	US-201615057199-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Mar 18, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A radiation detection apparatus includes a sensor base, a sensor substrate supported by the sensor base and configured to output signals from a plurality of pixels for radiation detection, a peripheral member arranged on a periphery of a side surface of the sensor substrate separately from the sensor substrate, supported by the sensor base, and configured not to output the signal for the radiation detection, and a scintillator layer configured to continuously cover the sensor substrate and the peripheral member.

First claim

What is claimed is:

1. A radiation detection apparatus comprising:
a sensor base;
a sensor substrate supported by the sensor base and configured to output signals from a plurality of pixels for radiation detection;
a peripheral member arranged in a periphery of a side surface of the sensor substrate separately from the sensor substrate, said peripheral member being supported by the sensor base and configured not to output the signal for radiation detection
a scintillator layer configured to continuously cover the sensor substrate and the peripheral member; and
a circuit configured to process the signals from the pixels.

2. The apparatus according to claim 1 , wherein an electrode for connection is arranged on at least one side of the sensor substrate, and
the peripheral member is arranged along a side of the sensor substrate where the electrode is not arranged.

3. The apparatus according to claim 2 , wherein a plurality of sensor substrates are supported by the sensor base.

4. The apparatus according to claim 3 , wherein the sensor substrate has a rectangular outer shape, and the side where the electrode is not arranged is a long side of the sensor substrate.

5. The apparatus according to claim 4 , wherein the plurality of sensor substrates supported by the sensor base are arranged such that a long side and a long side are adjacent, and a short side and a short side are adjacent, and
the number of sensor substrates arranged in a direction along the short side is larger than the number of sensor substrates arranged in a direction along the long side.

6. The apparatus according to claim 4 , wherein the peripheral member is arranged along a long side of a sensor substrate which is arranged at the end of the plurality of sensor substrates.

7. The apparatus according to claim 1 , wherein a thickness of the sensor substrate is not less than a thickness of the peripheral member.

8. The apparatus according to claim 7 , wherein a thickness of a first portion of the peripheral member is larger than a thickness of a second portion of the peripheral member, and
the first portion of the peripheral member is closer to the side surface of the sensor substrate than the second portion of the peripheral member.

9. The apparatus according to claim 7 , wherein a thickness of the scintillator layer that covers the peripheral member decreases from a first portion of the scintillator layer to a second portion of the scintillator layer,
the first portion of the scintillator layer is closer to the side surface of the sensor substrate than the second portion of the scintillator layer, and
the second portion of the scintillator layer is closer to a peripheral portion of the peripheral member than the first portion of the scintillator layer.

10. The apparatus according to claim 1 , wherein the scintillator layer includes a columnar crystal scintillator, and
the columnar crystal scintillator is at least partially in contact with the peripheral member.

11. A radiation imaging apparatus comprising:
the radiation detection apparatus defined in claim 1 ; and
a radiation source configured to generate radiation.

12. A method of manufacturing a radiation detection apparatus comprising:
placing a sensor substrate on a sensor base;
arranging a peripheral member separately from the sensor substrate so that a side surface of the peripheral member is opposite to a side surface of the sensor substrate, said peripheral member being configured not to output a signal for radiation detection; and
forming a scintillator layer so as to continuously cover the sensor substrate and the peripheral member.

13. The method according to claim 12 , wherein an electrode for connection is arranged on at least one side of the sensor substrate, and
the peripheral member is placed on the sensor base along a side of the sensor substrate where the electrode is not arranged.

14. The method according to claim 13 , wherein a plurality of sensor substrates are placed on the sensor base.

15. The method according to claim 14 , wherein the sensor substrate has a rectangular outer shape, and the side where the electrode is not arranged is a long side of the sensor substrate.

16. The method according to claim 15 , wherein the plurality of sensor substrates supported by the sensor base are placed such that a long side and a long side are adjacent, and a short side and a short side are adjacent, and
the number of sensor substrates placed in a direction along the short side is larger than the number of sensor substrates placed in a direction along the long side.

17. The method according to claim 12 , wherein the scintillator layer is formed such that a thickness of the scintillator layer that covers the peripheral member decreases from a portion close to the side surface of the sensor substrate to a peripheral portion of the peripheral member.

18. The method according to claim 12 , wherein the scintillator layer includes a columnar crystal, and
the scintillator layer is formed by a deposition method so as to continuously cover the sensor substrate and the peripheral member.

19. A radiation detection apparatus comprising:
a sensor base;
a sensor substrate supported by the sensor base and configured to output signals from a plurality of pixels for radiation detection;
a peripheral member supported by the sensor base, said peripheral member being arranged separately from the sensor substrate in a periphery of a side surface of the sensor substrate so that a side surface of the peripheral member is opposite to the side surface of the sensor substrate, and said peripheral member being configured not to output the signal for radiation detection; and
a scintillator layer configured to continuously cover the sensor substrate and the peripheral member.

20. The apparatus according to claim 19 , wherein the peripheral member is a convex portion of the sensor base.

21. A radiation imaging apparatus comprising:
the radiation detection apparatus according to claim 19 ; and
a radiation source configured to generate radiation.

Assignees

• Canon Kk

Inventors

• Ishida Yohei

Classifications

• G21K2004/12

  with a support · 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

• G01T1/202 Primary

  the detector being a crystal · CPC title

• G21K2004/02

  characterised by the external panel structure · CPC title