6‐2: Invited Paper: An Imager with Organic Photodetectors Based on LTPS‐TFT Technology

6‐2: Invited Paper: An Imager with Organic Photodetectors Based on LTPS‐TFT Technology

We have developed a high‐resolution 508 ppi conformable imager using low‐temperature polysilicon thin‐film transistors (LTPS TFTs) on a plastic substrate together with organic photodetectors which has high sensitivity in wavelength of visible and near‐infrared regions (NIR). Using a NIR light source...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2021-05, Vol.52 (1), p.45-48
Hauptverfasser: Nakamura, Takashi, Kato, Hirofumi, Kitamura, Ayato, Kimura, Hiroyuki, Takimoto, Akio, Yokota, Tomoyuki, Someya, Takao
Format: Artikel
Sprache:eng
Schlagworte:
Biometric authentication
Light sources
Low-temperature polysilicon
Near infrared radiation
Oxygen content
Oxygen saturation
Photodetector
Photometers
Polysilicon
Semiconductor devices
Substrates
Thin film transistor
Thin film transistors
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Beschreibung
Zusammenfassung:We have developed a high‐resolution 508 ppi conformable imager using low‐temperature polysilicon thin‐film transistors (LTPS TFTs) on a plastic substrate together with organic photodetectors which has high sensitivity in wavelength of visible and near‐infrared regions (NIR). Using a NIR light source, both images of fingerprints/veins and pulse waves are successfully obtained. By adding red light source, both red pulse wave and NIR pulse are measured to calculate percutaneous oxygen saturation.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.14606