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A flat panel detector

A flat panel detector and detection unit technology, applied in the field of detectors, can solve problems such as short wavelengths, and achieve the effects of reducing production costs, simplifying production processes, and suppressing ion feedback

Inactive Publication Date: 2015-10-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the wavelengths of the common X-rays or ultraviolet rays to be detected are very short, and it is difficult for traditional ICCD-based digital imaging systems to converge them to one point.
Therefore, traditional digital imaging systems are difficult to achieve imaging of such rays

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 and 2 As shown: the present invention is a closed space, which is composed of a transparent electrode 1 , a photocathode 3 , a dielectric film 4 , a grid hole plate 5 , a dielectric layer 6 and an anode 7 . When working, the space is filled with rare gas or a mixture of rare gas and quenching gas. first need to be in figure 1 A voltage is applied to the middle transparent electrode 1 , the photocathode 3 , the grid hole plate 5 and the anode 7 respectively. The voltages on the grid hole plate 5 , the photocathode 3 , the transparent electrode 1 and the anode 7 increase sequentially. The potential of electrode 1 is slightly higher than that of photocathode 3 . The rays to be detected are incident from above the transparent electrode 1 , penetrate the electrode 1 , and reach the photocathode 3 . The rays excite free ...

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Abstract

The invention discloses a flat panel detector. The detector is composed of a plurality of identical detection unit arrays. The detection unit comprises a transparent electrode, a photoelectric cathode, a dielectric film, a gridding hole plate and a reading electrode. Small holes are formed in the photoelectric cathode and the dielectric film. A certain distance exists between the transparent electrode and the photoelectric cathode, and to endure the generated initial electron to have enough space to drift into the small holes. The photoelectric cathode, the dielectric film, the gridding hole plate and the reading electrode are sequentially connected from top to bottom to form a relatively sealed space. The flat panel detector is an air detector which is simple in structure, easy to manufacture, and has an excellent detection performance, and detection on ultraviolet even visible light wave band can be achieved.

Description

technical field [0001] The invention relates to a detector, in particular to a novel flat-panel detector. Background technique [0002] A plasma display (Plasma display panel, PDP) is a flat panel display that uses gas discharge to emit light. It has the advantages of easy realization of large screen, thin thickness, light weight, long life, etc., so it has attracted extensive attention from the electronics industry. In addition to displaying images, other applications of this structure are also being researched and developed. Flat panel detector is one of the very promising directions. [0003] PDP has advantages and potentials that cannot be ignored in terms of detectors. The wavelengths of X-rays or ultraviolet rays, which are common signals to be detected at present, are very short, and it is difficult for traditional ICCD-based digital imaging systems to converge them to one point. Therefore, traditional digital imaging systems are difficult to realize the imaging o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J47/14
Inventor 张盼盼屠彦杨兰兰马善乐陈仲珊王莉莉
Owner SOUTHEAST UNIV
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