A Hydrogenated Amorphous Silicon Thin-Film Transistor Optical Pixel Sensor for Ameliorating Influences of Ambient Light and Reflected Light

Chih Lung Lin; Po Syun Chen; Ching Heng Chang; Jian Shen Yu; Chun Chang; Ya Hui Tseng

doi:10.1109/JEDS.2017.2695491

A Hydrogenated Amorphous Silicon Thin-Film Transistor Optical Pixel Sensor for Ameliorating Influences of Ambient Light and Reflected Light

Chih Lung Lin, Po Syun Chen, Ching Heng Chang, Jian Shen Yu, Chun Chang, Ya Hui Tseng

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This paper proposes a hydrogenated amorphous silicon thin-film transistorbased (a-Si:H TFT) optical pixel sensor. The proposed optical sensor compensates for variations of ambient light using photo TFTs that incorporate with three primary color filters, and a designed active load is utilized to release the photocurrent from the noise of reflected light. Measurement results reveal that the proposed sensor suppresses the effect of ambient light within the intensity of 12 560 lux and does not react to a blue light with an intensity of 588 lux, proving that the proposed optical sensor remains highly reliable under heavy ambient light and avoids the interference of reflected light.

Original language	English
Article number	7903587
Pages (from-to)	262-265
Number of pages	4
Journal	IEEE Journal of the Electron Devices Society
Volume	5
Issue number	4
DOIs	https://doi.org/10.1109/JEDS.2017.2695491
Publication status	Published - 2017 Jul

All Science Journal Classification (ASJC) codes

Biotechnology
Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/JEDS.2017.2695491

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abstract = "This paper proposes a hydrogenated amorphous silicon thin-film transistorbased (a-Si:H TFT) optical pixel sensor. The proposed optical sensor compensates for variations of ambient light using photo TFTs that incorporate with three primary color filters, and a designed active load is utilized to release the photocurrent from the noise of reflected light. Measurement results reveal that the proposed sensor suppresses the effect of ambient light within the intensity of 12 560 lux and does not react to a blue light with an intensity of 588 lux, proving that the proposed optical sensor remains highly reliable under heavy ambient light and avoids the interference of reflected light.",

author = "Lin, {Chih Lung} and Chen, {Po Syun} and Chang, {Ching Heng} and Yu, {Jian Shen} and Chun Chang and Tseng, {Ya Hui}",

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AU - Lin, Chih Lung

AU - Chen, Po Syun

AU - Chang, Ching Heng

AU - Yu, Jian Shen

AU - Chang, Chun

AU - Tseng, Ya Hui

PY - 2017/7

Y1 - 2017/7

N2 - This paper proposes a hydrogenated amorphous silicon thin-film transistorbased (a-Si:H TFT) optical pixel sensor. The proposed optical sensor compensates for variations of ambient light using photo TFTs that incorporate with three primary color filters, and a designed active load is utilized to release the photocurrent from the noise of reflected light. Measurement results reveal that the proposed sensor suppresses the effect of ambient light within the intensity of 12 560 lux and does not react to a blue light with an intensity of 588 lux, proving that the proposed optical sensor remains highly reliable under heavy ambient light and avoids the interference of reflected light.

AB - This paper proposes a hydrogenated amorphous silicon thin-film transistorbased (a-Si:H TFT) optical pixel sensor. The proposed optical sensor compensates for variations of ambient light using photo TFTs that incorporate with three primary color filters, and a designed active load is utilized to release the photocurrent from the noise of reflected light. Measurement results reveal that the proposed sensor suppresses the effect of ambient light within the intensity of 12 560 lux and does not react to a blue light with an intensity of 588 lux, proving that the proposed optical sensor remains highly reliable under heavy ambient light and avoids the interference of reflected light.

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A Hydrogenated Amorphous Silicon Thin-Film Transistor Optical Pixel Sensor for Ameliorating Influences of Ambient Light and Reflected Light

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