Flat plate type X-ray image sensor

An image sensor and X-ray technology, applied in the field of sensors, can solve problems such as short circuit of common electrode lines of data lines, electrostatic breakdown, etc.

Active Publication Date: 2013-06-19
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
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Problems solved by technology

[0005] An embodiment of the present invention provides a flat-panel X-ray image sensor, which is used to solve the phenomenon of electrostatic breakdown when a large current caused by static electricity passes through the data line, causing the data line and the common electrodes on both sides of the data line to be damaged. short circuit problem

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  • Flat plate type X-ray image sensor

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Embodiment Construction

[0022] An embodiment of the present invention provides a flat-panel X-ray image sensor, which is used to solve the electrostatic breakdown phenomenon that occurs when a large current caused by static electricity passes through the data line, causing the data line and the gate line or between the data line The common electrode line and the data line on the side are short-circuited, and when the protective pixel is damaged, there is no danger of interrupting the data line or the common electrode line during the repair process.

[0023] The technical solutions provided by the embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0024] see figure 1 , The working principle of the amorphous silicon (a-si) thin film transistor (Thin Film Transistor, TFT) flat-panel X-ray image sensor is: when X-ray (X-Ray) light is irradiated to the scintillation layer of the image sensor, cesium iodide ( CsI ​​Scintillator material), the scin...

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Abstract

The invention discloses a flat plate type X-ray image sensor. Due to the fact that protective pixels are arranged on a pixel array, when a large current which is caused by static electricity passes through a data line, short-circuit of a data line and public electrode wires which are located on two sides of the data line can be avoided. The flat plate type X-ray image sensor comprises the pixel array which is formed in a base plate and a public electrode bus which is located on the periphery of the pixel array. The pixel array comprises a plurality of data lines, scanning lines which cross with the plurality of data lines and pixel units which are located in an area of the scanning lines and the data lines. The pixel array further comprises at least one line of protective pixels, each protective pixel comprises a public electrode, and the public electrode is electrically connected with the public electrode bus through a conducting layer.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a flat-panel X-ray image sensor. Background technique [0002] The functional device that completes the photoelectric conversion of image information is called a photoelectric image sensor, and the flat-panel X-ray image sensor is a photoelectric image sensor that is often used in the medical field. For example, after X-rays pass through the human body, they are detected by a flat-panel X-ray image sensor, and the intensity distribution of X-rays is displayed on the monitor in different gray scales, so that the results of X-ray detection of the human body can be seen more intuitively . The thin film transistor (Thin Film Transistor, TFT) on the substrate of the flat-panel X-ray image sensor often suffers from electrostatic damage. Electrostatic damage generally occurs during the production process of the X-ray image sensor. Once electrostatic discharge occurs, it is easy to dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146H04N5/32
Inventor 郑朋卫
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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