Radiation detector, method of manufacturing a radiation detector, and scintillator panel assembly

Abstract

A radiation detector includes a sensor panel having a light-receiving surface, and a first scintillator panel and a second scintillator panel configured on the light-receiving surface in a state of being adjacent to each other along the light-receiving surface. The first scintillator panel has a first substrate, and a first scintillator layer including a plurality of columnar crystals. The second scintillator panel has a second substrate, and a second scintillator layer including a plurality of columnar crystals. The first scintillator layer reaches at least a first portion of the first substrate. The second scintillator layer reaches at least a second portion of the second substrate. A first angle in the first scintillator panel is 90 degrees or less. A second angle in the second scintillator panel is 90 degrees or less.

Description

Technical Field

[0001] This invention relates to a radiation detector, a method for manufacturing a radiation detector, and a scintillator panel assembly. Background Technology

[0002] Known radiation detectors include: a sensor panel having a light-receiving surface and a scintillator panel disposed on the light-receiving surface, wherein the scintillator layer in the scintillator panel is composed of multiple columnar crystals, and the angle formed between the surface of the sensor panel on one side of the scintillator panel and the side of the scintillator panel exceeds 90 degrees (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-060757 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the radiation detectors described above, the large area of ​​the sensor panel necessitates a large radiation detection area as well. However, when the scintillator layer in the scintillator panel is composed of multiple columnar crystals, although it is easy to obtain high-resolution radiation images, it is difficult to increase the area of ​​the scintillator panel simply to increase the radiation detection area because the shape of the scintillator panel is not taken into account.

[0008] The purpose of this invention is to provide a radiation detector that can achieve both a large radiation detection area and a high resolution radiation image, a method for manufacturing such a radiation detector, and a scintillator panel assembly suitable for them.

[0009] Methods for solving problems

[0010] A radiation detector according to one aspect of the present invention includes: a sensor panel having a light-receiving surface; and a first scintillator panel and a second scintillator panel disposed adjacent to each other on the light-receiving surface, the first scintillator panel having: a first substrate; and a first scintillator layer comprising a plurality of columnar crystals formed on the first substrate; the second scintillator panel having: a second substrate; and a second scintillator layer comprising a plurality of columnar crystals formed on the second substrate; the first scintillator panel is disposed on the light-receiving surface with the first scintillator layer located on one side of the light-receiving surface relative to the first substrate; the second scintillator panel is disposed with the second scintillator layer located on one side of the light-receiving surface relative to the second substrate. The outer edge of the first substrate, when viewed from the side of the first scintillator layer, is disposed on the light-receiving surface and includes a first portion extending along the second scintillator panel, with the first scintillator layer reaching at least the first portion. The outer edge of the second substrate, when viewed from the side of the second scintillator layer, includes a second portion extending along the first scintillator panel, with the second scintillator layer reaching at least the second portion. A first angle formed by the surface of the sensor panel side of the first scintillator panel and the side surface of the second scintillator panel of the first scintillator panel is less than 90 degrees, and a second angle formed by the surface of the sensor panel side of the second scintillator panel and the side surface of the first scintillator panel of the second scintillator panel is less than 90 degrees.

[0011] In one aspect of the radiation detector of the present invention, a first scintillator panel and a second scintillator panel are arranged adjacent to each other on the light-receiving surface of a sensor panel. In the first and second scintillator panels, the first scintillator layer reaches a first portion extending along the second scintillator panel at the outer edge of a first substrate, and the second scintillator layer reaches a second portion extending along the first scintillator panel at the outer edge of a second substrate. Therefore, the first and second scintillator panels can be constructed with dimensions that reliably allow the formation of multiple columnar crystals, and a radiation detection area is obtained from the first and second scintillator panels. Furthermore, the first angle formed by the surface of the first scintillator panel on the sensor panel side and the side surface of the first scintillator panel on the second scintillator panel side is 90 degrees or less, and the second angle formed by the surface of the second scintillator panel on the sensor panel side and the side surface of the second scintillator panel on the first scintillator panel side is 90 degrees or less. Therefore, it is possible to prevent the seam portion between the first and second scintillator panels from peeling off from the light-receiving surface of the sensor panel due to thermal expansion of air in the seam portion. Furthermore, because the first and second scintillator layers are close to each other, it is possible to suppress the degradation of the radiation image quality in the seam portion between the first and second scintillator panels. According to the above, a radiation detector according to one aspect of the present invention can achieve both a large radiation detection area and a high resolution radiation image.

[0012] In one aspect of the present invention, the radiation detector may have a first angle and a second angle of 45 degrees or more and less than 90 degrees. This allows for more reliable prevention of the seam portion between the first and second scintillator panels from peeling off from the light-receiving surface of the sensor panel due to thermal expansion of air in the seam portion.

[0013] In one aspect of the radiation detector of the present invention, the first substrate and the second substrate may each be flexible. This improves operability when each of the first scintillator panel and the second scintillator panel is bonded to the light-receiving surface of the sensor panel.

[0014] In one aspect of the radiation detector of the present invention, the first angle and the second angle may each be less than 90 degrees, and the sensor panel may be flexible. This allows the entire radiation detector to be flexed according to the installation environment of the radiation detector. Furthermore, when the entire radiation detector is flexed such that the sensor panel 2 is outward relative to the first and second scintillator panels, it is possible to prevent the first and second scintillator panels from physically interfering with each other.

[0015] In one aspect of the present invention, the radiation detector may further include adhesive layers disposed between the light-receiving surface and the first scintillator panel and between the light-receiving surface and the second scintillator panel, wherein the first scintillator panel and the second scintillator panel are respectively bonded to the light-receiving surface by the adhesive layers. Thus, the first scintillator panel and the second scintillator panel can be reliably disposed on the light-receiving surface of the sensor panel, respectively.

[0016] In one aspect of the radiation detector of the present invention, the adhesive layer may also contain an adhesive or bonding agent. This allows the first scintillator panel and the second scintillator panel to be reliably bonded to the light-receiving surface of the sensor panel, respectively.

[0017] In one aspect of the radiation detector of the present invention, the first scintillator panel may further have a first protective layer covering the first substrate and the first scintillator layer, and the second scintillator panel may further have a second protective layer covering the second substrate and the second scintillator layer. This allows for more reliable protection of multiple columnar crystals that are deliquescent.

[0018] In one aspect of the radiation detector of the present invention, a granular phosphor disposed between the first scintillator panel and the second scintillator panel may also be included. This allows for suppression of image quality degradation of the radiation image at the seam between the first scintillator panel and the second scintillator panel.

[0019] In one aspect of the radiation detector of the present invention, a moisture-proof layer may also be disposed on the first scintillator panel and the second scintillator panel on opposite sides of the sensor panel, the moisture-proof layer being continuously disposed across the first scintillator panel and the second scintillator panel. This prevents moisture from penetrating the seam between the first scintillator panel and the second scintillator panel, reliably protecting the multiple columnar crystals that are deliquescent. Furthermore, even if a difference in expansion and contraction due to temperature changes occurs between the sensor panel and the first scintillator panel and between the sensor panel and the second scintillator panel, it is possible to prevent the seam between the first scintillator panel and the second scintillator panel from peeling off from the light-receiving surface of the sensor panel.

[0020] In one aspect of the radiation detector of the present invention, the moisture-proof layer may also have: a flexible main body layer; and an inorganic layer disposed on the main body layer, wherein the moisture-proof layer is disposed on the first scintillator panel and the second scintillator panel with the inorganic layer located on one side of the first scintillator panel and the second scintillator panel relative to the main body layer. Thus, the inorganic layer can function as a moisture-proof layer, and the main body layer can function as a protective layer.

[0021] The radiation detector of one aspect of the present invention may also further include a sealing member, the outer edge of the moisture-proof layer, the surface of the sensor panel extending to the periphery of the light-receiving surface, and the sealing member sealing the outer edge of the moisture-proof layer on the surface of the sensor panel in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized. Thus, the moisture-proof layer can be tightly adhered to the first scintillator panel and the second scintillator panel without the use of an adhesive layer.

[0022] The radiation detector of one aspect of the present invention may further include: a first moisture-proof layer disposed on the opposite side of the sensor panel on the first scintillator panel; a second moisture-proof layer disposed on the opposite side of the sensor panel on the second scintillator panel; a first protective layer covering the first scintillator panel and the first moisture-proof layer; and a second protective layer covering the second scintillator panel and the second moisture-proof layer. This allows protection against a plurality of deliquescent columnar crystals.

[0023] A method for manufacturing a radiation detector according to one aspect of the present invention is a method for manufacturing the above-described radiation detector, comprising: a step of preparing a sensor panel; a step of preparing a first scintillator panel and a second scintillator panel; and a step of respectively arranging the first scintillator panel and the second scintillator panel on a light-receiving surface. In the step of preparing the first scintillator panel and the second scintillator panel, a first angle formed by the surface of the first scintillator panel on the sensor panel side and the side surface of the first scintillator panel on the second scintillator panel side is 90 degrees or less, and a second angle formed by the surface of the second scintillator panel on the sensor panel side and the side surface of the second scintillator panel on the first scintillator panel side is 90 degrees or less.

[0024] According to a method for manufacturing a radiation detector according to one aspect of the present invention, the above-described radiation detector can be easily and reliably obtained.

[0025] A scintillator panel assembly according to one aspect of the present invention includes: a support layer; and a first scintillator panel and a second scintillator panel disposed adjacent to each other on the support layer. The first scintillator panel has: a first substrate; and a first scintillator layer comprising a plurality of columnar crystals formed on the first substrate. The second scintillator panel has: a second substrate; and a second scintillator layer comprising a plurality of columnar crystals formed on the second substrate. When viewed from the side of the first scintillator layer, the outer edge of the first substrate includes a first portion extending along the second scintillator panel, and the first scintillator layer at least reaches the first portion. When viewed from the side of the second scintillator layer, the outer edge of the second substrate includes a second portion extending along the first scintillator panel, and the second scintillator layer at least reaches the second portion. A first angle formed by a surface on one side of the first scintillator layer of the first scintillator panel and a side surface on one side of the second scintillator panel of the first scintillator panel is 90 degrees or less, and a second angle formed by a surface on one side of the second scintillator layer of the second scintillator panel and a side surface on one side of the first scintillator panel of the second scintillator panel is 90 degrees or less.

[0026] According to one aspect of the invention, the scintillator panel assembly can be processed in a state where the first scintillator panel, the second scintillator panel, and the support layer are integrated.

[0027] In one aspect of the scintillator panel assembly of the present invention, the support layer may also be an adhesive layer. A first scintillator panel is disposed on the adhesive layer with the first scintillator layer positioned on one side of the adhesive layer relative to the first substrate. A second scintillator panel is disposed on the adhesive layer with the second scintillator layer positioned on one side of the adhesive layer relative to the second substrate. The adhesive layer is continuously disposed across the first and second scintillator panels. Therefore, processing can be performed while the first and second scintillator panels and the adhesive layer are integrally formed.

[0028] In one aspect of the scintillator panel assembly of the present invention, the support layer may also be a moisture-proof layer. A first scintillator panel is disposed on the moisture-proof layer with the first substrate positioned on the moisture-proof layer side relative to the first scintillator layer, and a second scintillator panel is disposed on the moisture-proof layer with the second substrate positioned on the moisture-proof layer side relative to the second scintillator layer. The moisture-proof layer is continuously disposed across the first and second scintillator panels. Therefore, processing can be performed while the first and second scintillator panels and the moisture-proof layer are integrated.

[0029] In one aspect of the scintillator panel assembly of the present invention, the first scintillator panel may further have a first protective layer covering the first substrate and the first scintillator layer, and the second scintillator panel may further have a second protective layer covering the second substrate and the second scintillator layer. This allows protection of multiple columnar crystals that are deliquescent.

[0030] The scintillator panel assembly of one aspect of the present invention may further include: a first moisture-proof layer disposed on the first scintillator panel on the opposite side of the adhesive layer; a second moisture-proof layer disposed on the second scintillator panel on the opposite side of the adhesive layer; a first protective layer covering the first scintillator panel and the first moisture-proof layer; and a second protective layer covering the second scintillator panel and the second moisture-proof layer. This allows protection against a plurality of deliquescent columnar crystals.

[0031] Invention Effects

[0032] According to the present invention, a radiation detector capable of balancing a large radiation detection area and a high resolution radiation image, a method for manufacturing such a radiation detector, and a scintillator panel assembly suitable for them can be provided. Attached Figure Description

[0033] Figure 1 This is a cross-sectional view of a radiation detector according to one embodiment.

[0034] Figure 2 This is a cross-sectional view of a scintillator panel assembly according to one embodiment.

[0035] Figure 3 This is a cross-sectional view of a radiation detector in one step of a method for manufacturing a radiation detector according to one embodiment.

[0036] Figure 4 This is a cross-sectional view of a modified radiation detector.

[0037] Figure 5 This is a cross-sectional view of a portion of a modified radiation detector.

[0038] Figure 6 This is a cross-sectional view of a modified scintillator panel assembly.

[0039] Figure 7 This is a cross-sectional view of a modified radiation detector.

[0040] Figure 8 This is a cross-sectional view of a modified radiation detector.

[0041] Figure 9 This is a cross-sectional view of a modified scintillator panel assembly.

[0042] Figure 10This is a cross-sectional view of a modified scintillator panel assembly. Detailed Implementation

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, in the various drawings, the same or equivalent parts are labeled with the same reference numerals, and repeated descriptions are omitted.

[0044] [Structure of a radiation detector]

[0045] like Figure 1 As shown, the radiation detector 1 includes: a sensor panel 2, a first scintillator panel 10, a second scintillator panel 20, an adhesive layer 3, a granular phosphor 4, a moisture-proof layer 5, an adhesive layer 6, and a sealing component 7. In the radiation detector 1, when radiation (e.g., X-rays) is incident on the first scintillator panel 10 and the second scintillator panel 20, scintillating light is generated in the first scintillator panel 10 and the second scintillator panel 20, and this scintillating light is detected by the sensor panel. The radiation detector 1 serves as a radiation imaging device, for example, for a medical radiographic diagnostic device or a non-destructive examination device.

[0046] The sensor panel 2 includes multiple photoelectric conversion elements (not shown) arranged along the light-receiving surface 2a. Each photoelectric conversion element constitutes a pixel and outputs an electrical signal corresponding to the incident flashing light. The light-receiving surface 2a is provided on one of the main surfaces of the sensor panel 2. In this main surface, a frame-shaped area, namely surface 2b, is provided that surrounds the light-receiving surface 2a. The sensor panel 2 is flexible. The material of the substrate in which the multiple photoelectric conversion elements are provided in the sensor panel 2 is, for example, PI (polyimide), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PP (polypropylene), PE (polyester), or PMMA (polymethyl methacrylate).

[0047] The first scintillator panel 10 and the second scintillator panel 20 are arranged adjacent to each other on the light-receiving surface 2a. The first scintillator panel 10 has a first substrate 11, a first scintillator layer 12, and a first protective layer 13. The second scintillator panel 20 has a second substrate 21, a second scintillator layer 22, and a second protective layer 23.

[0048] The first substrate 11 and the second substrate 21 are both flexible. The materials of the first substrate 11 and the second substrate 21 are, for example, PET, PEN, PI, PP, PE, or PMMA. The thickness of the first substrate 11 and the second substrate 21 is, for example, 50 μm or more and 250 μm or less. Functional films may also be formed on the surface and back surface of the first substrate 11 and the second substrate 21. These functional films are, for example, easy-to-adhere films, anti-static films, or moisture-proof films (parylene films). These functional films may also be laminated films comprising multiple films, each with different functions.

[0049] The first scintillator layer 12 includes a plurality of columnar crystals formed on the first substrate 11. The second scintillator layer 22 includes a plurality of columnar crystals formed on the second substrate 21. The plurality of columnar crystals are formed on the first substrate 11 or the second substrate 21, for example, by vapor deposition of scintillator material onto the first substrate 11 or the second substrate 21. The materials of the first scintillator layer 12 and the second scintillator layer 22 are, for example, CsI:Tl (cesium iodide containing thallium as an activator), CsI:Na (cesium iodide containing sodium as an activator), CsI:Ce (cesium iodide containing cerium as an activator), or CsI:Tl,Eu (cesium iodide containing thallium and europium as activators). The thickness of each of the first scintillator layer 12 and the second scintillator layer 22 is, for example, 100 μm or more and 1000 μm or less (preferably 400 μm or more and 800 μm or less).

[0050] The first protective layer 13 covers the first substrate 11 and the first scintillator layer 12. The second protective layer 23 covers the second substrate 21 and the second scintillator layer 22. The material of the first protective layer 13 and the second protective layer 23 is, for example, parylene. The thickness of the first protective layer 13 and the second protective layer 23 is, for example, 0.5 μm or more and 20 μm or less.

[0051] The first scintillator panel 10 is disposed on the light-receiving surface 2a with the first scintillator layer 12 positioned on the side of the light-receiving surface 2a relative to the first substrate 11. The first scintillator panel 10, when viewed from the thickness direction of the first substrate 11, is rectangular with one side having a length of 300 mm or more. The second scintillator panel 20 is disposed on the light-receiving surface 2a with the second scintillator layer 22 positioned on the side of the light-receiving surface 2a relative to the second substrate 21. The second scintillator panel 20, when viewed from the thickness direction of the second substrate 21, is rectangular with one side having a length of 300 mm or more.

[0052] The outer edge 11a of the first substrate 11, when viewed from the side of the first scintillator layer 12, includes a first portion 11b extending along the second scintillator panel 20. The first scintillator layer 12 reaches the first portion 11b. In this embodiment, the first scintillator layer 12 reaches the entire outer edge 11a. The outer edge 21a of the second substrate 21, when viewed from the side of the second scintillator layer 22, includes a second portion 21b extending along the first scintillator panel 10. The second scintillator layer 22 reaches the second portion 21b. In this embodiment, the second scintillator layer 22 reaches the entire outer edge 21a. The first portion 11b of the outer edge 11a of the first substrate 11 is opposite to the second portion 21b of the outer edge 21a of the second substrate 21.

[0053] The first substrate 11 and the first scintillator layer 12 are obtained by cutting the substrate and the scintillator layer after forming a scintillator layer containing a portion corresponding to a plurality of first substrates 11 on a substrate containing a portion corresponding to a plurality of first substrates 11. The second substrate 21 and the second scintillator layer 22 are obtained by cutting the substrate and the scintillator layer after forming a scintillator layer containing a portion corresponding to a plurality of second substrates 21 on a substrate containing a portion corresponding to a plurality of second substrates 21. Alternatively, the first substrate 11 and the first scintillator layer 12 may be obtained by cutting out the substrate and the scintillator layer after forming a scintillator layer containing a portion corresponding to a layer of first scintillator layers 12 on a substrate containing a portion corresponding to a piece of first substrate 11. Similarly, the second substrate 21 and the second scintillator layer 22 may be obtained by cutting out the substrate and the scintillator layer after forming a scintillator layer containing a portion corresponding to a layer of second scintillator layers 22 on a substrate containing a portion corresponding to a piece of second substrate 21.

[0054] The first angle θ1 formed by the surface 10a of the sensor panel 2 side (located on the side of the first scintillator layer 12 for the first substrate 11) and the side surface 10b of the second scintillator panel 20 side in the first scintillator panel 10 is 45 degrees or more and less than 90 degrees. In this embodiment, the surface 10a and the entire side surface of the first scintillator panel 10 form an angle of 45 degrees or more and less than 90 degrees. The second angle θ2 formed by the surface 20a of the sensor panel 2 side (located on the side of the second scintillator layer 22 for the second substrate 21) and the side surface 20b of the first scintillator panel 10 side in the second scintillator panel 20 is 45 degrees or more and less than 90 degrees. In this embodiment, the surface 20a and the entire side surface of the second scintillator panel 20 form an angle of 45 degrees or more and less than 90 degrees. The corner of the first scintillator panel 10, formed by surface 10a and side 10b, contacts the corner of the second scintillator panel 20, formed by surface 20a and side 20b.

[0055] An adhesive layer 3 is disposed between the light-receiving surface 2a and the first scintillator panel 10, and between the light-receiving surface 2a and the second scintillator panel 20. The first scintillator panel 10 is bonded to the light-receiving surface 2a by the adhesive layer 3 with the first scintillator layer 12 positioned on the side of the light-receiving surface 2a relative to the first substrate 11. The second scintillator panel 20 is bonded to the light-receiving surface 2a by the adhesive layer 3 with the second scintillator layer 22 positioned on the side of the light-receiving surface 2a relative to the second substrate 21. The adhesive layer 3 is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. That is, the adhesive layer 3 is not separated from the first scintillator panel 10 and the second scintillator panel 20, but is integrally formed.

[0056] Adhesive layer 3 is an adhesive or bonding agent. An adhesive is one that does not harden after bonding. A bonding agent is one that hardens after bonding. The material of adhesive layer 3 is, for example, a light-transmitting organic material (e.g., OCA (Optical Clear Adhesive)). The thickness of adhesive layer 3 is, for example, 0.1 μm or more and 100 μm or less (preferably 25 μm or less).

[0057] The granular phosphor 4 is disposed between the first scintillator panel 10 and the second scintillator panel 20. More specifically, the granular phosphor 4 is disposed within a V-shaped groove formed by the side surface 10b of the first scintillator panel 10 and the side surface 20b of the second scintillator panel 20. The material of the granular phosphor 4 is, for example, GOS (gadolinium oxysulfide).

[0058] A moisture-proof layer 5 covers the first scintillator panel 10 and the second scintillator panel 20 on the sensor panel 2. The moisture-proof layer 5 is disposed on the opposite sides of the sensor panel 2 on the first scintillator panel 10 and the second scintillator panel 20, and is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. The outer edge 5a of the moisture-proof layer 5 reaches the surface 2b of the sensor panel 2 (the surface surrounding the light-receiving surface 2a).

[0059] The moisture-proof layer 5 has a main body layer 51 and an inorganic layer 52. The main body layer 51 is flexible. The inorganic layer 52 is disposed on the main body layer 51. The inorganic layer 52 is integrated with the main body layer 51, for example, by bonding it to the main body layer 51. The moisture-proof layer 5 is disposed on the first scintillator panel 10 and the second scintillator panel 20 with the inorganic layer 52 on one side relative to the main body layer 51.

[0060] The material of the main layer 51 is, for example, PET, PEN, PI, PP, PE, or PMMA. The thickness of the main layer 51 is, for example, 50 μm or more and 250 μm or less. The material of the inorganic layer 52 is, for example, Al (aluminum), Cu (copper), Ti (titanium), Fe (iron), or SUS (stainless steel). The thickness of the inorganic layer 52 is, for example, 10 μm or more and 100 μm or less.

[0061] An adhesive layer 6 is disposed between the first scintillator panel 10 and the moisture-proof layer 5, between the second scintillator panel 20 and the moisture-proof layer 5, and between the surface 2b of the sensor panel 2 and the moisture-proof layer 5. The moisture-proof layer 5 is bonded to the surfaces 2b of the first scintillator panel 10, the second scintillator panel 20, and the sensor panel 2. The adhesive layer 6 is an adhesive or bonding agent. The thickness of the adhesive layer 6 is, for example, 0.1 μm or more and 100 μm or less (preferably 25 μm or less).

[0062] The sealing member 7 seals the outer edge 5a of the moisture-proof layer 5 on the surface 2b of the sensor panel 2. The sealing member 7 extends in a frame shape along the outer edge 5a. The material of the sealing member 7 is, for example, epoxy resin, silicone, fluorine, polyurethane, or acrylic. The material of the sealing member 7 may also include a filler material made of inorganic materials such as glass. The moisture resistance of the filler material should be higher than that of the main material of the sealing member 7, for example, SiO2 (silicon dioxide), Al2O3 (alumina), or TiO2 (titanium oxide).

[0063] As explained above, in the radiation detector 1, the first scintillator panel 10 and the second scintillator panel 20 are arranged adjacent to each other on the light-receiving surface 2a of the sensor panel 2. In the first scintillator panel 10 and the second scintillator panel 20, the first scintillator layer 12 reaches a first portion 11b extending along the second scintillator panel 20 in the outer edge 11a of the first substrate 11, and the second scintillator layer 22 reaches a second portion 21b extending along the first scintillator panel 10 in the outer edge 21a of the second substrate 21. Therefore, each of the first scintillator panel 10 and the second scintillator panel 20 can be configured with dimensions that allow for the reliable formation of multiple columnar crystals, and a radiation detection area can be obtained from the first scintillator panel 10 and the second scintillator panel 20. Furthermore, the first angle θ1 formed by the surface 10a on the sensor panel 2 side of the first scintillator panel 10 and the side surface 10b on the second scintillator panel 20 side of the first scintillator panel 10 is 90 degrees or less, and the second angle θ2 formed by the surface 20a on the sensor panel 2 side of the second scintillator panel 20 and the side surface 20b on the first scintillator panel 10 side of the second scintillator panel 20 is 90 degrees or less. This prevents the seam portion between the first scintillator panel 10 and the second scintillator panel 20 from peeling off from the light-receiving surface 2a due to thermal expansion of air in the seam portion. Furthermore, because the first scintillator layer 12 and the second scintillator layer 22 are close to each other, it is possible to suppress the degradation of the radiation image quality in the seam portion between the first scintillator panel 10 and the second scintillator panel 20. Based on the above, according to the radiation detector 1, both a large radiation detection area and a high resolution radiation image can be achieved.

[0064] In the radiation detector 1, the first angle θ1 and the second angle θ2 are both greater than 45 degrees and less than 90 degrees. As a result, it is possible to more reliably prevent the seam portion between the first scintillator panel 10 and the second scintillator panel 20 from peeling off from the light-receiving surface 2a due to thermal expansion of the air in the seam portion between the first scintillator panel 10 and the second scintillator panel 20.

[0065] In the radiation detector 1, the first substrate 11 and the second substrate 21 are both flexible. This improves the workability of bonding each of the first scintillator panel 10 and the second scintillator panel 20 to the light-receiving surface 2a.

[0066] In the radiation detector 1, the first angle θ1 and the second angle θ2 are each less than 90 degrees, and the sensor panel 2 is flexible. Therefore, the entire radiation detector 1 can be flexed according to the installation environment of the radiation detector 1. Furthermore, when the entire radiation detector 1 is flexed such that the sensor panel 2 is outward relative to the first scintillator panel 10 and the second scintillator panel 20, it is possible to prevent the first scintillator panel 10 and the second scintillator panel 20 from physically interfering with each other.

[0067] As an example, such as Figure 4 As shown, the radiation detector 1 can be bent as a whole by arranging the first scintillator panel 10 and the second scintillator panel 20 along the cylindrical surface S. At this time, since the first angle θ1 and the second angle θ2 are each less than 90 degrees, physical interference between the first scintillator panel 10 and the second scintillator panel 20 can be prevented. Furthermore, Figure 4 The radiation detector 1 shown does not include the granular phosphor 4, the moisture-proof layer 5, the adhesive layer 6, and the sealing component 7, but these may be included as needed.

[0068] In the radiation detector 1, adhesive layers 3 are disposed between the light-receiving surface 2a and the first scintillator panel 10 and between the light-receiving surface 2a and the second scintillator panel 20, with each adhesive layer 3 of the first scintillator panel 10 and the second scintillator panel 20 bonded to the light-receiving surface 2a. This allows each of the first scintillator panel 10 and the second scintillator panel 20 to be reliably disposed on the light-receiving surface 2a.

[0069] In the radiation detector 1, the adhesive layer 3 contains an adhesive or bonding agent. This allows the first scintillator panel 10 and the second scintillator panel 20 to be reliably bonded to the light-receiving surface 2a.

[0070] In the radiation detector 1, the first scintillator panel 10 has a first protective layer 13 covering the first substrate 11 and the first scintillator layer 12, and the second scintillator panel 20 has a second protective layer 23 covering the second substrate 21 and the second scintillator layer 22. This allows for more reliable protection of multiple columnar crystals that are prone to deliquescence.

[0071] In the radiation detector 1, a granular phosphor 4 is disposed between the first scintillator panel 10 and the second scintillator panel 20. As a result, the image quality degradation of the radiation image can be suppressed at the seam between the first scintillator panel 10 and the second scintillator panel 20.

[0072] In the radiation detector, a moisture-proof layer 5 is disposed on the first scintillator panel 10 and the second scintillator panel 20 on the opposite side of the sensor panel 2, and the moisture-proof layer 5 is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. This prevents moisture from penetrating the seam between the first scintillator panel 10 and the second scintillator panel 20, and reliably protects against multiple deliquescent columnar crystals. Furthermore, even if a difference in expansion and contraction due to temperature changes occurs between the sensor panel 2 and the first scintillator panel 10, and between the sensor panel 2 and the second scintillator panel 20, it can prevent the seam between the first scintillator panel 10 and the second scintillator panel 20 from peeling off from the light-receiving surface 2a.

[0073] In the radiation detector 1, the moisture-proof layer 5 has a flexible main layer 51 and an inorganic layer 52 disposed on the main layer 51. The moisture-proof layer 5 is disposed on the first scintillator panel 10 and the second scintillator panel 20 with the inorganic layer 52 located on one side of the first scintillator panel 10 and the second scintillator panel 20 relative to the main layer 51. Thus, the inorganic layer 52 can function as the moisture-proof layer 5, and the main layer 51 can function as a protective layer.

[0074] In the radiation detector 1, an adhesive layer 3 is disposed between the light-receiving surface 2a and the first scintillator panel 10 and between the light-receiving surface 2a and the second scintillator panel 20, and is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. This prevents each of the first scintillator panel 10 and the second scintillator panel 20 from peeling off from the light-receiving surface 2a.

[0075] In the radiation detector 1, the first scintillator panel 10, when viewed from the thickness direction of the first substrate 11, is rectangular with a side length of 300 mm or more, and the second scintillator panel 20, when viewed from the thickness direction of the second substrate 21, is rectangular with a side length of 300 mm or more. This allows for easy and reliable scaling of the radiation detection area.

[0076] [Structure of the scintillator panel assembly]

[0077] like Figure 2 As shown, the scintillator panel assembly 100 includes: a first scintillator panel 10, a second scintillator panel 20, an adhesive layer 3, and a release sheet 8. The scintillator panel assembly 100 is used, for example, in the manufacture of the radiation detector 1 described above.

[0078] The first scintillator panel 10 and the second scintillator panel 20 are disposed adjacent to each other on the adhesive layer 3, which serves as a support layer. The adhesive layer 3 is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. A release sheet 8 covers the adhesive layer 3 from opposite sides of the first scintillator panel 10 and the second scintillator panel 20. The adhesive force of the adhesive layer 3 to the surface 8a of the release sheet 8 is lower than the adhesive force of the adhesive layer 3 to the first scintillator panel 10 and the second scintillator panel 20. In the scintillator panel assembly 100, the adhesive layer 3 is an adhesive layer.

[0079] The first scintillator panel 10 is disposed on the adhesive layer 3 with the first scintillator layer 12 positioned on the adhesive layer 3 relative to the first substrate 11. The second scintillator panel 20 is disposed on the adhesive layer 3 with the second scintillator layer 22 positioned on the adhesive layer 3 relative to the second substrate 21. That is, the arrangement of the first scintillator panel 10 and the second scintillator panel 20 on the adhesive layer 3 in the scintillator panel assembly 100 is the same as the arrangement of the first scintillator panel 10 and the second scintillator panel 20 on the adhesive layer 3 in the radiation detector 1 described above.

[0080] According to the above-described scintillator panel assembly 100, processing can be performed with the first scintillator panel 10, the second scintillator panel 20, and the adhesive layer 3 integrated together.

[0081] In the scintillator panel assembly 100, the first scintillator panel 10 has a first protective layer 13 covering the first substrate 11 and the first scintillator layer 12, and the second scintillator panel 20 has a second protective layer 23 covering the second substrate 21 and the second scintillator layer 22. This allows protection of a plurality of deliquescent columnar crystals.

[0082] [Manufacturing method of radiation detector]

[0083] The method for manufacturing the radiation detector 1 described above will be explained. In this embodiment, the scintillator panel assembly 100 described above will be used.

[0084] First, prepare sensor panel 2 (the process of preparing sensor panel 2). Next, as follows... Figure 2 In the state shown, with the scintillator panel assembly 100 in place, a first scintillator panel 10 and a second scintillator panel 20 are prepared (the process of preparing the first scintillator panel 10 and the second scintillator panel 20). In the process of preparing the first scintillator panel 10 and the second scintillator panel 20, the first angle θ1 and the second angle θ2 are both 45 degrees or more and less than 90 degrees. Figure 1(Refer to). Among them, for the process of preparing sensor panel 2, and the process of preparing first scintillator panel 10 and second scintillator panel 20, either process can be performed first, or both processes can be performed simultaneously.

[0085] Next, the release sheet 8 is peeled off from the adhesive layer 3 of the scintillator panel assembly 100, as follows: Figure 3 As shown, the first scintillator panel 10 and the second scintillator panel 20 are each bonded to the light-receiving surface 2a by an adhesive layer 3 (bonding process). That is, the first scintillator panel 10 and the second scintillator panel 20 are each disposed on the light-receiving surface 2a (process of disposing the first scintillator panel 10 and the second scintillator panel 20 respectively). In the bonding process, the adhesive layer 3 is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. In the bonding process, before bonding the first scintillator panel 10 and the second scintillator panel 20 to the light-receiving surface 2a respectively, the adhesive layer 3 is first disposed on the first scintillator panel 10 and the second scintillator panel 20 respectively.

[0086] During the bonding process, since the first substrate 11 and the second substrate 21 are both flexible, the first scintillator panel 10 and the second scintillator panel 20 can be flexed while being gradually bonded to the light-receiving surface 2a from one side. At this time, the corner of the second scintillator panel 20 formed by the surface 20a and the side surface 20b can reliably contact the corner of the first scintillator panel 10 formed by the surface 10a and the side surface 10b.

[0087] Next, as Figure 1 As shown, on the sensor panel 2, the first scintillator panel 10 and the second scintillator panel 20 are covered by a moisture-proof layer 5. That is, the moisture-proof layer 5 is disposed on the opposite side of the sensor panel 2 and on the first scintillator panel 10 and the second scintillator panel 20 (the process of disposing of the moisture-proof layer 5). In the process of disposing of the moisture-proof layer 5, the moisture-proof layer 5 is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. Then, the outer edge 5a of the moisture-proof layer 5 is sealed by the sealing member 7 on the surface 2b of the sensor panel 2, thereby obtaining the radiation detector 1. In this embodiment, the process of disposing of the first scintillator panel 10 and the second scintillator panel 20 is performed before the process of disposing of the moisture-proof layer 5.

[0088] By following the above method for manufacturing radiation detector 1, the radiation detector 1 described above can be easily and reliably obtained.

[0089] In the manufacturing method of the radiation detector 1, during the bonding process, before bonding the first scintillator panel 10 and the second scintillator panel 20 to the light-receiving surface 2a, adhesive layers 3 are first disposed on the first scintillator panel 10 and the second scintillator panel 20 respectively. This allows the process to be performed while the first scintillator panel 10, the second scintillator panel 20, and the adhesive layers 3 are integrated.

[0090] In the manufacturing method of the radiation detector 1, the steps of configuring the first scintillator panel 10 and the second scintillator panel 20 are performed before the step of configuring the moisture-proof layer 5. Therefore, when the moisture-proof layer 5 is configured on the opposite side of the sensor panel 2 and on the first scintillator panel 10 and the second scintillator panel 20, the processing can be performed while the sensor panel 2 and the first scintillator panel 10 and the second scintillator panel 20 are integrated.

[0091] [Variation Example]

[0092] This invention is not limited to the embodiments described above. In the radiation detector 1, as... Figure 5 As shown, the first angle θ1 and the second angle θ2 can also be 90 degrees each. That is, in the radiation detector 1, the first angle θ1 and the second angle θ2 only need to be 90 degrees or less. This is also true in the manufacturing methods of the scintillator panel assembly 100 and the radiation detector 1 described above.

[0093] like Figure 6 As shown, the scintillator panel assembly 100 may also include: a moisture-proof layer 5 serving as a support layer; and a first scintillator panel 10 and a second scintillator panel 20 disposed adjacent to each other along the moisture-proof layer 5. Figure 6 The structure of the scintillator panel assembly 100 shown is as follows. Specifically, a moisture-proof layer 5 is continuously disposed across the first scintillator panel 10 and the second scintillator panel 20. The first scintillator panel 10 is disposed on the moisture-proof layer 5 with the first substrate 11 positioned on one side of the moisture-proof layer 5 relative to the first scintillator layer 12. The second scintillator panel 20 is disposed on the moisture-proof layer 5 with the second substrate 21 positioned on one side of the moisture-proof layer 5 relative to the second scintillator layer 22.

[0094] In such Figure 6In the scintillator panel assembly 100 shown, a moisture-proof layer 5 covers the first scintillator panel 10 and the second scintillator panel 20. An adhesive layer 6 is disposed between the first scintillator panel 10 and the moisture-proof layer 5, and between the second scintillator panel 20 and the moisture-proof layer 5. Further, an adhesive layer 3 is disposed between the first scintillator panel 10 and the release sheet 8, and between the second scintillator panel 20 and the release sheet 8. An adhesive layer 6 is disposed between the outer edge 5a of the moisture-proof layer 5 and the release sheet 8. Adhesive layers 3 and 6 are adhesive layers. The adhesive force of adhesive layer 3 on the surface 8a of the release sheet 8 is lower than the adhesive force of adhesive layer 3 on the first scintillator panel 10 and the second scintillator panel 20. The adhesive force of adhesive layer 6 on the surface 8a of the release sheet 8 is lower than the adhesive force of adhesive layer 6 on the outer edge 5a of the moisture-proof layer 5. According to... Figure 6 The scintillator panel assembly 100 shown can be processed in a state where the first scintillator panel 10, the second scintillator panel 20, and the moisture-proof layer 5 are integrated. Wherein, as Figure 6 The scintillator panel assembly 100 shown may also exclude the adhesive layer 3, the portion disposed on the outer edge 5a of the adhesive layer 6, and the release sheet 8.

[0095] like Figure 7 As shown, in the radiation detector 1, the outer edge of the moisture-proof layer 5 may be located on the first scintillator panel 10 and the second scintillator panel 20, and the sealing component 7 may seal the outer side of the first scintillator panel 10 and the second scintillator panel 20, as well as the outer side of the moisture-proof layer 5, on the surface 2b of the sensor panel 2.

[0096] like Figure 8 As shown, in the radiation detector 1, the first moisture-proof layer 5A may be disposed on the first scintillator panel 10 on the opposite side of the sensor panel 2, and the second moisture-proof layer 5B may be disposed on the second scintillator panel 20 on the opposite side of the sensor panel 2. In this case, the first protective layer 13 may cover the first scintillator panel 10 and the first moisture-proof layer 5A, and the second protective layer 23 may cover the second scintillator panel 20 and the second moisture-proof layer 5B. The structure of the first moisture-proof layer 5A and the second moisture-proof layer 5B is the same as the structure of the moisture-proof layer 5 described above. Figure 8 In the radiation detector 1 shown, the sealing component 7 seals the outer sides of the first scintillator panel 10 and the second scintillator panel 20, as well as the outer sides of the first moisture-proof layer 5A and the second moisture-proof layer 5B, on the surface 2b of the sensor panel 2. Figure 8 The radiation detector 1 shown is capable of protecting multiple columnar crystals that are deliquescent.

[0097] like Figure 9As shown, in the scintillator panel assembly 100, the outer edge of the moisture-proof layer 5 may also be located on the first scintillator panel 10 and the second scintillator panel 20. Wherein, as Figure 9 The scintillator panel assembly 100 shown may also exclude the adhesive layer 3 and the release sheet 8.

[0098] like Figure 10 As shown, in the scintillator panel assembly 100, the first moisture-proof layer 5A may be disposed on the first scintillator panel 10 on the opposite side of the adhesive layer 3, and the second moisture-proof layer 5B may be disposed on the second scintillator panel 20 on the opposite side of the adhesive layer 3. In this case, the first protective layer 13 may cover the first scintillator panel 10 and the first moisture-proof layer 5A, and the second protective layer 23 may cover the second scintillator panel 20 and the second moisture-proof layer 5B. The structures of the first moisture-proof layer 5A and the second moisture-proof layer 5B are the same as the structure of the moisture-proof layer 5 described above. Figure 10 The scintillator panel assembly 100 shown is capable of protecting multiple columnar crystals that are deliquescent.

[0099] In the radiation detector 1 and scintillator panel assembly 100, the first substrate 11 and the second substrate 21 may each lack flexibility. In this case, the materials of the first substrate 11 and the second substrate 21 may be, for example, CFRP (carbon fiber reinforced plastic), aC (amorphous carbon), Al, Cu, or glass. When the materials of the first substrate 11 and the second substrate 21 are both metallic, functional films (such as parylene films) may be formed on the surface and back side of the first substrate 11 and the second substrate 21, for example, as corrosion-resistant coatings. These functional films may also be laminated films comprising multiple films, each with different functions. As an example, when the materials of the first substrate 11 and the second substrate 21 are both Al, acid-resistant aluminum (anodic aluminum oxide) films and parylene films may be formed on the surface and back side of the first substrate 11 and the second substrate 21. In the radiation detector 1 and scintillator panel assembly 100, the first substrate 11 and the second substrate 21 may each be laminated substrates comprising multiple substrates (e.g., CFRP substrates and PET substrates).

[0100] In the radiation detector 1 and scintillator panel assembly 100, the first scintillator layer 12 may extend to at least a first portion 11b of the outer edge 11a of the first substrate 11. Similarly, the second scintillator layer 22 may extend to at least a second portion 21b of the outer edge 11a of the second substrate 21. In the radiation detector 1 and scintillator panel assembly 100, the first substrate 11 and the first scintillator layer 12 are not limited to being obtained by cutting or slicing; the first scintillator layer 12 may extend to the side of the first substrate 11. Similarly, the second substrate 21 and the second scintillator layer 22 are not limited to being obtained by cutting or slicing; the second scintillator layer 22 may extend to the side of the second substrate 21.

[0101] In the radiation detector 1, the sensor panel 2 may not be flexible. In this case, the material of the substrate in which multiple photoelectric conversion elements are provided in the sensor panel 2 may be, for example, a-Si (amorphous silicon), Si (silicon), or glass (e.g., alkali-free glass). In the radiation detector 1, the outer edge 5a of the moisture-proof layer 5 reaches the surface 2b of the sensor panel 2 surrounding the light-receiving surface 2a. The sealing member 7 may also seal the outer edge 5a of the moisture-proof layer 5 on the surface 2b of the sensor panel 2 when the area defined by the sensor panel 2 and the moisture-proof layer 5 is depressurized. In this case, the moisture-proof layer 5 can be tightly attached to the first scintillator panel 10 and the second scintillator panel 20 without the use of the adhesive layer 3. In the radiation detector 1, the cap-shaped moisture-proof layer 5 may also be covered by the first scintillator panel 10 and the second scintillator panel 20 in the sensor panel 2, and the sealing member 7 may seal the outer edge 5a of the moisture-proof layer 5 on the surface 2b of the sensor panel 2.

[0102] The radiation detector 1 and scintillator panel assembly 100 may also exclude the moisture-proof layers 5, 5A, and 5B. The radiation detector 1 and scintillator panel assembly 100 may also exclude the first protective layer 13 and the second protective layer 23.

[0103] In the manufacturing method of the radiation detector 1, an adhesive layer 3 may be disposed on the light-receiving surface 2a before the first scintillator panel 10 and the second scintillator panel 20 are each bonded to the light-receiving surface 2a. In this case, each of the first scintillator panel 10 and the second scintillator panel 20 can be processed separately. In the manufacturing method of the radiation detector 1, the process of disposing of the moisture-proof layer 5 may also be performed before the process of disposing of each of the first scintillator panel 10 and the second scintillator panel 20. In this case, when the first scintillator panel 10 and the second scintillator panel 20 are disposed on the light-receiving surface 2a, the process can be performed with the first scintillator panel 10, the second scintillator panel 20, and the moisture-proof layer 5 integrated together.

[0104] All embodiments and variations of the radiation detector 1, the scintillator panel assembly 100, and the manufacturing method of the radiation detector 1 described above are possible as long as they include a first scintillator panel 10 and a second scintillator panel 20 as a plurality of scintillator panels arranged in a one-dimensional or two-dimensional configuration. For example, in the case of a three-scintillator panel arrangement in one dimension, any two adjacent scintillator panels can be considered as the first scintillator panel 10 and the second scintillator panel 20. Furthermore, in the case of a four-scintillator panel arrangement in two dimensions, any two adjacent scintillator panels can be considered as the first scintillator panel 10 and the second scintillator panel 20.

[0105] Explanation of reference numerals in the attached figures

[0106] 1…Radiation detector

[0107] 2…Sensor Panel

[0108] 2a…Light-receiving surface

[0109] 2b…Surface

[0110] 3… Adhesive layer

[0111] 4… Granular phosphors

[0112] 5…moisture-proof layer

[0113] 5a…outer edge

[0114] 5A…First Moisture-Proof Layer

[0115] 5B…Second Moisture-Proof Layer

[0116] 7…Sealing components

[0117] 10…First Scintillator Panel

[0118] 10a… Surface

[0119] 10b…side view

[0120] 11…1st substrate

[0121] 11a…outer edge

[0122] 11b…Part 1

[0123] 12…First Scintillator Layer

[0124] 13…First protective layer

[0125] 20…Second Scintillator Panel

[0126] 20a… Surface

[0127] 20b…side view

[0128] 21...2nd substrate

[0129] 21a…outer edge

[0130] 21b…Part 2

[0131] 22…Second Scintillator Layer

[0132] 23…Second protective layer

[0133] 51…Main Layer

[0134] 52…Inorganic layer

[0135] 100… Flashing Body Panel Component

[0136] θ1…first angle

[0137] θ2…the second angle.

Claims

1. A radiation detector characterized by, include: A sensor panel with a light-receiving surface; and The first scintillator panel and the second scintillator panel are arranged adjacent to each other on the light-receiving surface. The first scintillator panel has: a first substrate; and a first scintillator layer comprising a plurality of columnar crystals formed on the first substrate. The second scintillator panel has: a second substrate; and a second scintillator layer comprising a plurality of columnar crystals formed on the second substrate, The first scintillator panel is disposed on the light-receiving surface with the first scintillator layer located on one side of the light-receiving surface relative to the first substrate. The second scintillator panel is disposed on the light-receiving surface with the second scintillator layer located on one side of the light-receiving surface relative to the second substrate. The outer edge of the first substrate, as viewed from the side of the first scintillator layer, includes a first portion extending along the second scintillator panel, the first scintillator layer reaching at least this first portion. The outer edge of the second substrate, as viewed from the side of the second scintillator layer, includes a second portion extending along the first scintillator panel, and the second scintillator layer at least reaches the second portion. The first angle formed by the surface of the sensor panel side of the first scintillator panel and the side surface of the second scintillator panel side of the first scintillator panel is greater than 45 degrees and less than 90 degrees. The second angle formed by the surface of the sensor panel side of the second scintillator panel and the side surface of the first scintillator panel side of the second scintillator panel is greater than 45 degrees and less than 90 degrees.

2. The radiation detector as described in claim 1, characterized in that: The first substrate and the second substrate are both flexible.

3. The radiation detector as described in claim 2, characterized in that: The first angle and the second angle are both less than 90 degrees. The sensor panel is flexible.

4. The radiation detector as described in claim 1, characterized in that: It also includes adhesive layers disposed between the light-receiving surface and the first scintillator panel and between the light-receiving surface and the second scintillator panel. The first scintillator panel and the second scintillator panel are respectively bonded to the light-receiving surface by the adhesive layer.

5. The radiation detector as described in claim 2, characterized in that: It also includes adhesive layers disposed between the light-receiving surface and the first scintillator panel and between the light-receiving surface and the second scintillator panel. The first scintillator panel and the second scintillator panel are respectively bonded to the light-receiving surface by the adhesive layer.

6. The radiation detector as described in claim 3, characterized in that: It also includes adhesive layers disposed between the light-receiving surface and the first scintillator panel and between the light-receiving surface and the second scintillator panel. The first scintillator panel and the second scintillator panel are respectively bonded to the light-receiving surface by the adhesive layer.

7. The radiation detector as described in claim 4, characterized in that: The adhesive layer contains an adhesive or bonding agent.

8. The radiation detector as described in claim 5, characterized in that: The adhesive layer contains an adhesive or bonding agent.

9. The radiation detector as described in claim 6, characterized in that: The adhesive layer contains an adhesive or bonding agent.

10. The radiation detector according to any one of claims 1 to 9, characterized in that: The first scintillator panel also has a first protective layer covering the first substrate and the first scintillator layer. The second scintillator panel also has a second protective layer covering the second substrate and the second scintillator layer.

11. The radiation detector according to any one of claims 1 to 9, characterized in that: It also includes granular phosphors disposed between the first scintillator panel and the second scintillator panel.

12. The radiation detector as claimed in claim 10, characterized in that: It also includes granular phosphors disposed between the first scintillator panel and the second scintillator panel.

13. The radiation detector as described in any one of claims 1 to 9, characterized in that: It also includes a moisture-proof layer disposed on the opposite side of the sensor panel on the first scintillator panel and the second scintillator panel. The moisture-proof layer is continuously disposed across the first scintillator panel and the second scintillator panel.

14. The radiation detector as claimed in claim 10, characterized in that: It also includes a moisture-proof layer disposed on the opposite side of the sensor panel on the first scintillator panel and the second scintillator panel. The moisture-proof layer is continuously disposed across the first scintillator panel and the second scintillator panel.

15. The radiation detector as claimed in claim 11, characterized in that: It also includes a moisture-proof layer disposed on the opposite side of the sensor panel on the first scintillator panel and the second scintillator panel. The moisture-proof layer is continuously disposed across the first scintillator panel and the second scintillator panel.

16. The radiation detector as claimed in claim 12, characterized in that: It also includes a moisture-proof layer disposed on the opposite side of the sensor panel on the first scintillator panel and the second scintillator panel. The moisture-proof layer is continuously disposed across the first scintillator panel and the second scintillator panel.

17. The radiation detector as claimed in claim 13, characterized in that: The moisture-proof layer has the following characteristics: Flexible main body layer; and Inorganic layer configured on the main body layer, The moisture-proof layer is disposed on the first scintillator panel and the second scintillator panel with the inorganic layer located on one side of the first scintillator panel and the second scintillator panel relative to the main body layer.

18. The radiation detector as claimed in claim 14, characterized in that: The moisture-proof layer has the following characteristics: Flexible main body layer; and Inorganic layer configured on the main body layer, The moisture-proof layer is disposed on the first scintillator panel and the second scintillator panel with the inorganic layer located on one side of the first scintillator panel and the second scintillator panel relative to the main body layer.

19. The radiation detector as claimed in claim 15, characterized in that: The moisture-proof layer has the following characteristics: Flexible main body layer; and Inorganic layer configured on the main body layer, The moisture-proof layer is disposed on the first scintillator panel and the second scintillator panel with the inorganic layer located on one side of the first scintillator panel and the second scintillator panel relative to the main body layer.

20. The radiation detector as claimed in claim 16, characterized in that: The moisture-proof layer has the following characteristics: Flexible main body layer; and Inorganic layer configured on the main body layer, The moisture-proof layer is disposed on the first scintillator panel and the second scintillator panel with the inorganic layer located on one side of the first scintillator panel and the second scintillator panel relative to the main body layer.

21. The radiation detector as claimed in claim 13, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

22. The radiation detector as claimed in claim 14, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

23. The radiation detector as claimed in claim 15, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

24. The radiation detector as claimed in claim 16, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

25. The radiation detector as claimed in claim 17, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

26. The radiation detector as claimed in claim 18, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

27. The radiation detector as claimed in claim 19, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

28. The radiation detector as claimed in claim 20, characterized in that: It also includes sealing components, The outer edge of the moisture-proof layer extends to the surface of the sensor panel surrounding the light-receiving surface. The sealing component, in a state where the area defined by the sensor panel and the moisture-proof layer is depressurized, seals the outer edge of the moisture-proof layer on the surface of the sensor panel.

29. The radiation detector of any one of claims 1 to 9, wherein Also includes: A first moisture-proof layer is disposed on the first scintillator panel on the opposite side of the sensor panel; A second moisture-proof layer is disposed on the second scintillator panel on the opposite side of the sensor panel; A first protective layer covering the first scintillator panel and the first moisture-proof layer; and A second protective layer covering the second scintillator panel and the second moisture-proof layer.

30. A method for manufacturing a radiation detector, comprising manufacturing the radiation detector according to any one of claims 1 to 29, wherein the method for manufacturing the radiation detector is characterized by comprising: The process of preparing the sensor panel; The process of preparing the first scintillator panel and the second scintillator panel; and The process of respectively arranging the first scintillator panel and the second scintillator panel on the light-receiving surface, In the process of preparing the first scintillator panel and the second scintillator panel, The first angle formed by the surface of the sensor panel side of the first scintillator panel and the side surface of the second scintillator panel side of the first scintillator panel is greater than 45 degrees and less than 90 degrees. The second angle formed by the surface of the sensor panel side of the second scintillator panel and the side surface of the first scintillator panel side of the second scintillator panel is greater than 45 degrees and less than 90 degrees.

31. A scintillator panel assembly, characterized by, include: Support layer; and The first scintillator panel and the second scintillator panel are arranged adjacent to each other on the support layer. The first scintillator panel has: a first substrate; and a first scintillator layer comprising a plurality of columnar crystals formed on the first substrate. The second scintillator panel has: a second substrate; and a second scintillator layer comprising a plurality of columnar crystals formed on the second substrate. The outer edge of the first substrate, as viewed from the side of the first scintillator layer, includes a first portion extending along the second scintillator panel, the first scintillator layer reaching at least this first portion. The outer edge of the second substrate, as viewed from the side of the second scintillator layer, includes a second portion extending along the first scintillator panel, and the second scintillator layer at least reaches the second portion. The first angle formed by the surface of the first scintillator layer of the first scintillator panel and the side surface of the second scintillator panel of the first scintillator panel is greater than 45 degrees and less than 90 degrees. The second angle formed by the surface of the second scintillator layer of the second scintillator panel and the side surface of the first scintillator panel of the second scintillator panel is greater than 45 degrees and less than 90 degrees.

32. The scintillator panel assembly as claimed in claim 31, characterized in that: The support layer is an adhesive layer. The first scintillator panel is disposed on the adhesive layer with the first scintillator layer located on one side of the adhesive layer relative to the first substrate. The second scintillator panel is disposed on the adhesive layer with the second scintillator layer located on one side of the adhesive layer relative to the second substrate. The adhesive layer is continuously disposed across the first scintillator panel and the second scintillator panel.

33. The scintillator panel assembly as claimed in claim 31, characterized in that: The support layer is a moisture-proof layer. The first scintillator panel is disposed on the moisture-proof layer with the first substrate positioned on the side of the moisture-proof layer relative to the first scintillator layer. The second scintillator panel is disposed on the moisture-proof layer with the second substrate positioned on the side of the moisture-proof layer relative to the second scintillator layer. The moisture-proof layer is continuously disposed across the first scintillator panel and the second scintillator panel.

34. The scintillator panel assembly as claimed in any one of claims 31 to 33, characterized in that: The first scintillator panel also has a first protective layer covering the first substrate and the first scintillator layer. The second scintillator panel also has a second protective layer covering the second substrate and the second scintillator layer.

35. The scintillator panel assembly of claim 32, wherein, Also includes: A first moisture-proof layer is disposed on the first scintillator panel on the opposite side of the adhesive layer; A second moisture-proof layer is disposed on the second scintillator panel on the opposite side of the adhesive layer; A first protective layer covering the first scintillator panel and the first moisture-proof layer; and A second protective layer covering the second scintillator panel and the second moisture-proof layer.

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