6‐2: Invited Paper: An Imager with Organic Photodetectors Based on LTPS‐TFT Technology. Issue 1 (28th June 2021)

• Record Type: Journal Article
• Authors: Nakamura, Takashi; Kato, Hirofumi; Kitamura, Ayato; Kimura, Hiroyuki; Takimoto, Akio; Yokota, Tomoyuki; Someya, Takao
• Is Part Of: Digest of technical papers. Volume 52:Issue 1(2021)
• Page Start: 45
• Page End: 48
• Publication Date: 2021-06-28
• Subjects: Photodetector -- Thin film transistor -- Low-temperature polysilicon -- Biometric authentication -- Vital sign -- Oxygen saturation; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.14606
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : 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.