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X-ray detecting method and X-ray detector therefor

A detection method and photosensitive plate technology, applied in X/γ/cosmic radiation measurement, instruments, measuring devices, etc., can solve the problems of expensive and difficult to reduce flat panel detectors, so as to avoid physical damage and performance impact, reduce cost effect

Active Publication Date: 2007-07-11
珠海友通科技有限公司
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  • Abstract
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Problems solved by technology

[0005] However, flat panel detectors based on TFT technology are expensive and difficult to reduce

Method used

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  • X-ray detecting method and X-ray detector therefor
  • X-ray detecting method and X-ray detector therefor

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Embodiment Construction

[0029] As shown in Figure 1, the photosensitive plate has the following characteristics: capture X-rays, convert X-rays into charges (holes and electrons) and store them. In the effective working range, the converted charge signal is equal to the input X-rays Proportional. Wherein, the photosensitive plate can be made of materials such as cadmium zinc telluride (CdZnTe), amorphous selenium (a-Se) or mercury iodide (HgI).

[0030] As shown in FIG. 2, electrodes 31, 32 are provided at both ends of the photosensitive plate. Under the action of the electrodes 31 and 32, the holes and electrons generated in the photosensitive plate 10 after exposure move to both ends of the photosensitive plate 10, thereby forming voltage signals corresponding to the captured X-rays.

[0031] The present invention utilizes the physical characteristics of liquid crystals, that is, when voltage is applied, the arrangement of liquid crystal molecules becomes orderly, making it easy for light to pass ...

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Abstract

The invention relates to x ray detecting method and detector. It uses photographic plate to capture x ray to convert it to electric charge, forming corresponding voltage signal using electrode, using voltage signal to control LCD layer forming and capturing x ray corresponding visible light through status, reading the status information to get electric signal. Without using TFT technique, it can effectively reduce X ray detector cost, reaching the same effect with the detector based on TFT tech. Using non contact electric charge reading technique, it can avoid physical damage and impact to feature of the photographic plate.

Description

technical field [0001] The invention relates to an X-ray detection method and an X-ray detector. Background technique [0002] Currently, the technology used for X-ray detection is mainly TFT (Thin Film Transistor)-based flat panel detector (TFT Based Flat Panel Detector) technology. Commonly used TFT flat-panel detector technologies can be divided into direct conversion and indirect conversion. [0003] The structure of the direct-conversion TFT technology flat-panel detector is mainly a flat-panel detector composed of an amorphous selenium layer (amorphous Selemium, a-Se) and a thin film semiconductor array (Thin Film Transistorarray). The combination of the TFT array and the amorphous selenium semiconductor material conversion layer constitutes the cover layer. Since amorphous selenium is a photoconductive material, this cover layer directly captures and converts X-rays into electrical signals, which are detected by the TFT array and then passed through the A / D The conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/00G01T1/16G01T1/24H01L31/115
Inventor 邹鲁民
Owner 珠海友通科技有限公司
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