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http://dx.doi.org/10.7736/KSPE.2012.29.11.1164

Integrated IR Photo Sensor for Display Application  

Jeon, Ho-Sik (Department of Semiconductor and Display Engineering, Hoseo Univ.)
Heo, Yang-Wook (Department of Digital Display Engineering, Hoseo Univ.)
Lee, Jae-Pyo (Department of Digital Display Engineering, Hoseo Univ.)
Han, Sang-Youn (LCD Research and Development Center, Samsung Display)
Bae, Byung-Seong (Department of Semiconductor and Display Engineering, Hoseo Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.29, no.11, 2012 , pp. 1164-1169 More about this Journal
Abstract
This paper presents a study of an integrated infrared (IR) photo sensor for display application. We fabricated hydrogenated amorphous silicon thin film transistor (a-Si:H TFT) and hydrogenated amorphous silicon germanium thin film transistor (a-SiGe:H TFT) which were bottom gate structure. We investigated the dependence of a-SiGe:H TFT characteristics on incident wavelengths. We proposed photo sensor which responded to wavelengths of IR region. Proposed pixel circuit of photo sensor was consists of switch TFT and photo TFT, and one capacitor. We developed integrated photo sensor circuit and investigated the performance of the proposed sensor circuit according to the input wavelengths. The developed photo sensor circuit with a-SiGe:H TFT was suitable for IR.
Keywords
Liquid Crystal Display; Photo Sensor; a-SiGe:H TFT; Integrated Circuit;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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