A large-area curved pyroelectric fingerprint sensor - CEA - Commissariat à l’énergie atomique et aux énergies alternatives
Conference Papers Year : 2020

A large-area curved pyroelectric fingerprint sensor

M. Pouet
  • Function : Author
J.-Y. Fourre
  • Function : Author
S. Sinopoli
  • Function : Author
L. Fritsch
  • Function : Author
J. Karlsson
  • Function : Author
F. de Roose
  • Function : Author
S. Steudel
  • Function : Author

Abstract

We show a thin, flexible and large 500 dpi fingerprint sensor for security applications providing better usability than existing sensors with a similar performance. A new process flow, using PVDF-TrFE pyroelectric capacitors on top of an IGZO TFT backplane on a flexible polyimide (PI) foil is implemented to create an active thermal fingerprint sensor. The system measurements fit well with the simulation of the thermal operation.
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Dates and versions

cea-04779309 , version 1 (13-11-2024)

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Jf. Mainguet, D. Gallaire, A. Martinent, A. Revaux, M. Benwadih, et al.. A large-area curved pyroelectric fingerprint sensor. 2019 IEEE International Electron Devices Meeting (IEDM), Dec 2019, San Francisco, United States. pp.26.5.1-26.5.4, ⟨10.1109/IEDM19573.2019.8993475⟩. ⟨cea-04779309⟩
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