A kind of X-ray detection panel and its preparation method

An X-ray and panel technology, which is applied in the field of X-ray detection panels and detection instruments, can solve problems such as human hazards, failure to reach X-ray detection, and huge cost of safety investment

Active Publication Date: 2019-05-03
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The scintillator used in this technology is made of doped cesium iodide, but the thallium and its compound thallium iodide contained in the doped cesium iodide are highly toxic substances, which will cause great harm to the human body, so the preparation This type of panel requires a huge investment in safety
In addition, if pure undoped cesium iodide crystals are used, the purpose of converting X-rays into visible light for detection cannot be achieved.

Method used

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  • A kind of X-ray detection panel and its preparation method
  • A kind of X-ray detection panel and its preparation method
  • A kind of X-ray detection panel and its preparation method

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] An embodiment of the present invention provides an X-ray detection panel, including a base substrate 6, a switch array 5 arranged on the base substrate 6, and a photodetection device array 4 arranged on the switch array 5; it also includes: a cover plate 1, The scintillator film layer 2 arranged on the cover plate 1;

[0025] Wherein, the side 2 of the cover plate 1 provided with the scintillator film layer and the side of the base substrate 6 provided ...

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Abstract

The embodiment of the invention discloses an X-ray detecting panel and a preparation method thereof, relates to the field of detecting instruments, and provides the X-ray detecting panel with non-thallium-doped scintillator film layer as the scintillator. The injuries of thallium and iodide thereof to human bodies can be avoided, and meanwhile the preparation cost of the X-ray detecting panel is greatly reduced. The X-ray detecting panel comprises a lining substrate, a switch array arranged on the lining substrate, a photoelectric detector array arranged on the switch array, a cover plate, a scintillator film layer arranged on the cover plate, and a colloid quantum dot film layer arranged between the scintillator film layer and the photoelectric detector array, wherein the scintillator film layer is used for converting X-rays into near ultraviolet light, the colloid quantum dot film layer is used for converting near ultraviolet light converted by the scintillator film layer into visible light to be output, and the photoelectric detector array is used for converting the visible light converted by a wavelength converting unit into electric signals to be output.

Description

technical field [0001] The invention relates to the field of detection instruments, in particular to the field of X-ray detection panels. Background technique [0002] Because of the characteristics of high photon energy and strong penetrating power, X-rays are widely used in medical perspective inspection, industrial flaw detection and security inspection in subways, airports, stations and other places. The X-ray detection panels currently on the market use 500-600 micron thick CsI:TlI (thallium iodide-doped cesium iodide) columnar crystal film as the scintillator material to convert high-energy X-rays into visible light, and then It is detected by the amorphous silicon photodetector array and converted into voltage and current signals, and finally collected by the Array backplane and read out by peripheral circuits, and output to the display to form an image. The scintillator used in this technology is made of doped cesium iodide, but the thallium and its compound thalliu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/146G01T1/20
CPCG01T1/20H01L27/14663
Inventor 王熙元田慧李延钊
Owner BOE TECH GRP CO LTD
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