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Light sensing unit and X-ray detector

A technology of photosensitive unit and photosensitive element, which is applied in the field of X-ray detection, can solve the problems of affecting the accuracy of X-ray detection and low precision of optical signal sensing, and achieve the effect of improving precision and accuracy

Active Publication Date: 2019-04-19
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a photosensitive unit and an X-ray detector to solve the problem in the prior art that the accuracy of optical signal sensing is low due to the offset of transistor overlay, thus affecting the accuracy of X-ray detection

Method used

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  • Light sensing unit and X-ray detector
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  • Light sensing unit and X-ray detector

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Embodiment Construction

[0048]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.

[0049] The transistors used in all embodiments of the present invention may be triodes, thin film transistors or field effect transistors or other devices with the same characteristics. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the control pole, one pole is called the first pole, and the other pole is called the second pole.

[0050] In actual operation, when the transistor is a triode, the contro...

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Abstract

The invention provides a light sensing unit and an X-ray detector. The light sensing unit comprises a first energy saving circuit and a light sensing member, a first end of the light sensing member isconnected with a first end of the first energy saving circuit, the light sensing unit further comprises a first switch circuit and a second switch circuit, and a control end of the first switch circuit and a control end of the second switch circuit are connected with corresponding row gratings; the first and second switch circuits are symmetrically arranged on both sides of corresponding column data wires. The light sensing unit and the X-ray detector can improve the accuracy of light signal sensing to further improve the detecting accuracy of X-ray.

Description

technical field [0001] The invention relates to the technical field of X-ray detection, in particular to a photosensitive unit and an X-ray detector. Background technique [0002] With the popularization of digital medical care, X-ray detectors in commonly used medical equipment gradually adopt flat-panel X-ray detectors, which use scintillator layers to convert X-rays into visible light for detection. The photosensitive unit in the flat panel X-ray detector is composed of arrayed photosensitive pixels. Each photosensitive pixel contains an independent photosensitive device, which realizes the measurement of light intensity through the principle of photoelectric effect. The amount of photocharges accumulated by each photosensitive pixel represents the intensity of the transmitted X-rays at the corresponding position. The output of these photocharges and the corresponding gray value according to a certain relationship can form a medical image picture. [0003] In flat-panel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
CPCA61B6/42A61B6/44A61B6/4429Y02E10/50
Inventor 林坚薛艳娜华刚张勇张丽敏方浩博包智颖
Owner BOE TECH GRP CO LTD