| Presentation | 2002/9/13 Evaluation of Sensitivity on a Capacitive Fingerprint Sensor LSI with a Grounded Wall Structure Hiroki MORIMURA, Satoshi SHIGEMATSU, Toshishige SHIMAMURA, Norio SATO, Katsuyuki MACHIDA, Hakaru KYURAGI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes the sensitivity to capture fingerprint images on a capacitive fingerprint sensor LSI with a grounded (GND) wall structure. We investigated the sensing characteristics of the fingerprint sensor LSI with the GND wall structure in comparison with that of the conventional planar structure. For the analysis, we proposed circuit models based on the GND wall and the planar structure that take account of the finger's resistance, and calculated numerically the sensing characteristics. The analysis revealed that the resistance of the finger degrades the sensitivity and the GND wall structure provides a high sensitivity because it suppresses the finger's resistance. The experimental results confirmed that the proposed models are appropriate and clarified the effect of the GND wall structure on fingerprint images. Therefore, it is concluded that a fingerprint sensor LSI with the GND wall structure achieves a high sensitivity in capturing clear fingerprint images. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | fingerprint sensor / GND wall structure / sensing circuit / high sensitivity / finger's resistance |
| Paper # | OME2002-56 |
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| Conference Information | |
| Committee | OME |
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| Conference Date | 2002/9/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Sensitivity on a Capacitive Fingerprint Sensor LSI with a Grounded Wall Structure |
| Sub Title (in English) | |
| Keyword(1) | fingerprint sensor |
| Keyword(2) | GND wall structure |
| Keyword(3) | sensing circuit |
| Keyword(4) | high sensitivity |
| Keyword(5) | finger's resistance |
| 1st Author's Name | Hiroki MORIMURA |
| 1st Author's Affiliation | NTT Microsystem Integration Laboratories() |
| 2nd Author's Name | Satoshi SHIGEMATSU |
| 2nd Author's Affiliation | NTT Microsystem Integration Laboratories |
| 3rd Author's Name | Toshishige SHIMAMURA |
| 3rd Author's Affiliation | NTT Microsystem Integration Laboratories |
| 4th Author's Name | Norio SATO |
| 4th Author's Affiliation | NTT Microsystem Integration Laboratories |
| 5th Author's Name | Katsuyuki MACHIDA |
| 5th Author's Affiliation | NTT Microsystem Integration Laboratories |
| 6th Author's Name | Hakaru KYURAGI |
| 6th Author's Affiliation | NTT Microsystem Integration Laboratories |
| Date | 2002/9/13 |
| Paper # | OME2002-56 |
| Volume (vol) | vol.102 |
| Number (no) | 327 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |