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MSM (metal-semiconductor-metal) type detector and bias voltage adjusting method and device thereof

A bias voltage and detector technology, applied in the field of photodetectors, can solve problems such as poor image quality, achieve low popcorn noise, high sensitivity, and improve quality

Active Publication Date: 2019-08-16
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 application provides an MSM type detector and its bias voltage adjustment method and device to solve the technical problem of poor image quality collected in the prior art

Method used

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  • MSM (metal-semiconductor-metal) type detector and bias voltage adjusting method and device thereof
  • MSM (metal-semiconductor-metal) type detector and bias voltage adjusting method and device thereof
  • MSM (metal-semiconductor-metal) type detector and bias voltage adjusting method and device thereof

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Embodiment 1

[0078] The method for adjusting the bias voltage of a MSM type detector provided by the embodiment of the present application will be further described in detail below in conjunction with the accompanying drawings. The specific implementation of the method may include the following steps (the method flow is as follows: image 3 shown):

[0079] S301. Determine an initial bias voltage of a metal-semiconductor-metal MSM detector.

[0080] Specifically, the MSM-type detector receives a power-on command input by the user, and controls the power-on operation based on the power-on command. After detecting that the power-on operation is completed, the MSM-type detector needs to determine an initial bias voltage.

[0081] In an implementable solution, determining the initial bias voltage of the MSM detector includes:

[0082] Determine whether the bias voltage set by the latest startup is stored in the MSM detector;

[0083] If yes, determine to use the bias voltage as the initial b...

Embodiment 2

[0124] The embodiment of the present application provides an MSM type detector bias voltage adjustment device, see Figure 4 , the device consists of:

[0125] A determining unit 401, configured to determine the initial bias voltage of the MSM type detector;

[0126] The acquisition unit 402 acquires an image of the object to be measured based on the initial bias voltage, and determines a noise parameter corresponding to the image;

[0127] The adjustment unit 403 is configured to adjust the initial bias voltage based on a preset first mechanism to obtain an adjusted bias voltage, reacquire the image of the object to be measured based on the adjusted bias voltage, and determine corresponding noise parameters;

[0128] A judging unit 404, configured to judge whether the difference in noise parameters of images collected based on the bias voltage before and after adjustment is greater than a preset first threshold;

[0129] The processing unit 405 is configured to adjust the a...

Embodiment 3

[0152] The embodiment of the present application provides an MSM type detector, see Figure 5 , MSM type detectors, including:

[0153] Memory 501, configured to store instructions executed by at least one processor;

[0154] The processor 502 is configured to execute instructions stored in the memory to execute the method according to Embodiment 1.

[0155] Further, see Figure 6 , the MSM-type detector provided in the embodiment of the present application may also include: a transceiver 503, which is used to send the image collected by the MSM-type detector to electronic devices such as remote computing or servers, wherein the transceiver 503 It can be integrated inside the MSM detector, or it can be set outside the MSM detector and connected with the MSM detector.

[0156] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may t...

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Abstract

The invention discloses an MSM (metal-semiconductor-metal) type detector and a bias voltage adjusting method and device thereof. The method comprises the following steps: determining the initial biasvoltage of the MSM type detector, collecting an image of a to-be-detected object based on the initial bias voltage, and determining a noise parameter corresponding to the image; adjusting the initialbias voltage to obtain adjusted bias voltage, recollecting the image of the to-be-detected object based on the adjusted bias voltage, determining the noise parameter corresponding to the recollected image, and judging whether the difference between the noise parameters of the images collected by the bias voltage before and after adjustment is larger than a preset first threshold value or not; if not, adjusting the adjusted bias voltage again until the difference between the noise parameters of the images collected by the bias voltage before and after adjustment is larger than the preset firstthreshold value, and using the bias voltage before the last adjustment as the final bias voltage of the MSM type detector. The technical problem of poor quality of the collected images in the prior art is solved.

Description

technical field [0001] The present application relates to the technical field of photodetectors, in particular to an MSM detector, a bias voltage adjustment method and device thereof, and an MSM detector. Background technique [0002] In the field of photodetector technology, metal-semiconductor-metal (MSM) detectors are widely used in the field of photodetection due to their simple structure and easy monolithic integration of field effect transistors to realize optoelectronic integrated circuits. [0003] The setting of the bias voltage of the MSM detector has a direct impact on the performance of the MSM detector. For example, the sensitivity of the MSM detector increases with the increase of the bias voltage, and as the bias voltage increases, the MSM detection The popcorn noise of the device also increases. At present, the setting of the bias voltage of the MSM detector is generally to select a theoretically larger value as the bias voltage of the MSM detector within th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/34G01D5/12H01L31/09
CPCG01D5/12G01D5/34H01L31/095
Inventor 段立业卢尧侯孟军唐大伟
Owner BOE TECH GRP CO LTD
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