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X-ray image sensor and image interference correction method therefor

An image sensor and image correction technology, which is applied in image communication, electric solid-state devices, semiconductor devices, etc., can solve problems such as image quality impact, and achieve the effect of improving image quality

Active Publication Date: 2016-11-16
SHANGHAI IRAY TECH
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Problems solved by technology

[0010] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an X-ray image sensor and its method for correcting image interference, which is used to solve the problem of time and space interference affecting image quality in the prior art

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Embodiment Construction

[0051] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0052] see Figure 3 ~ Figure 4 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbi...

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Abstract

The invention provides an X-ray image sensor and an image interference correction method therefor. The technical scheme of the invention is that each pixel is connected with two TFT switches; two scanning lines are designed between pixel rows; two reading lines are designed between pixel columns, wherein the scanning and reading of a bright field image and a dark field image are carried out independently; an upper side reading circuit is responsible for the reading of the bright field image; a lower side reading circuit is responsible for the reading of the dark field image; there is one row or n rows of time between the reading of the bright field image and the dark field image. The gray scale of the dark field images in the pixel units in one row is used for correcting the gray scale of the bright field images in the pixel units collected at the same time. There is no need to increase the collection time of the independent dark field images, and the method can correct the interference based on time and space, and effectively improves the image quality.

Description

technical field [0001] The invention relates to the field of medical image diagnosis, in particular to an X-ray image sensor and a method for correcting image interference thereof. Background technique [0002] X-ray digital photography technology has been more and more widely used in the field of medical imaging diagnosis today. Among various X-ray digital photography equipment, X-ray detector is the most core and key component with the highest technical content in this type of equipment. It plays an indispensable key role in the imaging acquisition process of the entire image. [0003] Amorphous silicon X-ray flat panel detector mainly consists of X-ray incident surface (usually carbon plate material), scintillator, X-ray image sensor, signal integral reading circuit, structural shell and other parts. [0004] The imaging process of the X-ray detector needs to go through the transformation process from "X-ray" to "visible light" to "electron". Such as figure 1 As shown,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146H04N5/32
CPCH01L27/146H01L27/14603H01L27/14683H04N5/32
Inventor 于祥国金利波林言成
Owner SHANGHAI IRAY TECH
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