US 12,442,943 B2
Radiation detector
Takashi Izumi, Nasushiobara (JP); and Hiroshi Aida, Meguro (JP)
Assigned to CANON ELECTRON TUBES & DEVICES CO., LTD., Otawara (JP)
Filed by CANON ELECTRON TUBES & DEVICES CO., LTD., Otawara (JP)
Filed on Jul. 3, 2023, as Appl. No. 18/346,353.
Application 18/346,353 is a continuation of application No. PCT/JP2021/017022, filed on Apr. 28, 2021.
Claims priority of application No. 2021-000116 (JP), filed on Jan. 4, 2021.
Prior Publication US 2023/0350085 A1, Nov. 2, 2023
Int. Cl. G01T 1/20 (2006.01)
CPC G01T 1/20188 (2020.05) [G01T 1/2002 (2013.01); G01T 1/2018 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A radiation detector comprising:
a photoelectric conversion substrate having a detection area and a non-detection area outside the detection area;
a scintillator layer provided on the photoelectric conversion substrate and located at least in the detection area;
a frame-shaped sealant located in the non-detection area, surrounding the scintillator layer, and bonded to the photoelectric conversion substrate;
a cover provided above the scintillator layer, located in the detection area and the non-detection area, and bonded to the sealant to cover the scintillator layer with the photoelectric conversion substrate and the sealant; and
a moisture absorbing layer which is provided between the scintillator layer and the cover and located at least in the detection area and whose a light transmittance changes as an amount of moisture inside changes,
wherein
the moisture absorbing layer covers the entire scintillator layer in planar view.