Touch fingerprint sensor based on sensor cell isolation technique with pseudo direct signaling
May 02, 2018
About this article
Article Category: research-article
Published Online: May 02, 2018
Page range: 1 - 9
Received: Oct 18, 2018
Accepted: Mar 02, 2019
DOI: https://doi.org/10.21307/ijssis-2019-001
Keywords
© 2019 Hyeopgoo Yeo published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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Performance summary and comparisons_
| Parameter | This work | Ref. Hassan and Kim (2018) | Ref. Shimamura et al. (2010) | Ref. Jung et al. (2005) |
|---|---|---|---|---|
| Technology | 0.25 µm | 0.13 µm | 0.5 µm | 0.35 µm |
| Type of sensor | Capacitive | Capacitive | Capacitive | Capacitive |
| Supply voltage | 1.8~2.5 V | 1.5 V | 3.3 V | 3 V |
| Molding thickness | 80 µm | – | – | – |
| Operating frequency | 10 MHz (readout 30 MHz) | 1 MHz | – | 40 MHz |
| Power dissipation | <3 mA | 7.5 mA (25 mW) | 7.5 mA (25 mW) | – |
| Image capture time |
<20 ms | 0.2 ms | 20 ms | – |
| Array size | 96 × 96 | 20 × 16 | 224 × 256 | 160 × 192 |
| Image resolution | 508 ppi | 282 ppi | 508 ppi | 423 ppi |
| FRR@FAR = 10−4 | 2.2% | – | – | – |