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Pixel unit electrostatic protection structure and image sensor

A technology of electrostatic protection and pixel unit, which is applied in the direction of static electricity, electric solid devices, circuits, etc., and can solve problems such as unsatisfactory electrostatic protection effects

Active Publication Date: 2014-12-31
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the electrostatic protection effect is not ideal

Method used

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  • Pixel unit electrostatic protection structure and image sensor
  • Pixel unit electrostatic protection structure and image sensor
  • Pixel unit electrostatic protection structure and image sensor

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1c , Which shows Figure 1b The equivalent circuit diagram of the electrostatic protection structure of the prior art shown. Path 1 is the signal transmission path, and Path 2 is the electrostatic drain path. The equivalent impedance of the path 1 is the line resistance R1 of the data line, and the equivalent impedance of the path 2 is the sum of the data line resistance R2, the additional inductance impeda...

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Abstract

The invention discloses an electrostatic protection structure comprising data lines used for transmitting pixel signals; each data line comprises an electrostatic guide path and a signal transmission path; one end of each signal transmission path is connected with one pixel unit; the other end of each signal transmission path is connected with one signal output end; the signal transmission paths are used for outputting pixel unit signals; one end of each electrostatic guide path is connected to a fixed potential; the other end of each electrostatic guide path is connected to one signal output end; impedance of the signal transmission paths is greater than that of the electrostatic guide paths. The invention further discloses an X-ray image sensor comprising the electrostatic protection structure and a manufacturing method of the X-ray image sensor. By the use of the electrostatic protection structure, static electricity on the data lines can be effectively guided out, and an operating circuit is protected from electrostatic damage.

Description

Technical field [0001] The invention relates to the field of electrostatic protection, in particular to an electrostatic protection structure that can prevent electrostatic damage and an image sensor adopting the electrostatic protection structure. Background technique [0002] With the development of society and the continuous advancement of science and technology, various digital imaging medical technologies have emerged one after another, and digital imaging technology has played a very important role in the current medical field. In most of the existing digital imaging medical applications, such as X-ray (X-ray) chest X-ray and CT-computed tomography, the most important component in digital imaging technology is the X-ray sensor. [0003] The working principle of the X-ray sensor is: X-rays pass through the scintillator layer or the phosphor layer to generate visible light. The visible light is converted by the photodiode in the pixel unit and generates charge. The charge is st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146
CPCH01L27/0288H01L27/0292H01L27/14658G01T1/17H05F3/00
Inventor 费小磊凌严朱虹祁刚
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD