| Presentation | 2015-01-23 Magnetic-Field Sensor using Poly-Si Hall Devices : Sensitivity Improvement by High Voltage Application and OpAmp Circuits Akito YOSHIKAWA, Takaaki MATSUMOTO, Shougo MIYAMURA, Haruki SHIGA, Tokiyoshi MATSUDA, Mutsumi KIMURA, Tokuro OZAWA, Koji AOKI, Chih-Che KUO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We are executing research and development of magnetic field sensors using poly-Si Hall devices. In this study, in order to improve the sensitivity, we applied a high voltage of 580V to a Hall device and obtained the maximum sensitivity of 5.13V/T. Moreover, we evaluated open loop gain of an operational amplifier using poly-Si TFTs. In a poly-Si TFT Hall device equipped with the operational amplifier circuit, we applied only a low voltage of 10V to the poly-Si TFT Hall device but obtained a large sensitivity of 1.71 V/T by amplification using the operational amplifier circuit. These experimental results show that poly-Si Hall devices can be utilized to measure the magnetic-flux density and there is a possibility that they can be applied to magnetic-field area sensors. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Poly-Si / Hall device / Magnetic field sensor / High voltage Operational amplifier circuit |
| Paper # | EID2014-47 |
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| Committee | EID |
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| Conference Date | 2015/1/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Electronic Information Displays (EID) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Magnetic-Field Sensor using Poly-Si Hall Devices : Sensitivity Improvement by High Voltage Application and OpAmp Circuits |
| Sub Title (in English) | |
| Keyword(1) | Poly-Si |
| Keyword(2) | Hall device |
| Keyword(3) | Magnetic field sensor |
| Keyword(4) | High voltage Operational amplifier circuit |
| 1st Author's Name | Akito YOSHIKAWA |
| 1st Author's Affiliation | Department of Electronics and Informatics,Ryukoku University() |
| 2nd Author's Name | Takaaki MATSUMOTO |
| 2nd Author's Affiliation | Department of Electronics and Informatics,Ryukoku University |
| 3rd Author's Name | Shougo MIYAMURA |
| 3rd Author's Affiliation | Department of Electronics and Informatics,Ryukoku University |
| 4th Author's Name | Haruki SHIGA |
| 4th Author's Affiliation | Department of Electronics and Informatics,Ryukoku University |
| 5th Author's Name | Tokiyoshi MATSUDA |
| 5th Author's Affiliation | Department of Electronics and Informatics,Ryukoku University |
| 6th Author's Name | Mutsumi KIMURA |
| 6th Author's Affiliation | Department of Electronics and Informatics,Ryukoku University |
| 7th Author's Name | Tokuro OZAWA |
| 7th Author's Affiliation | R&D Department, AU Optronics Corporation |
| 8th Author's Name | Koji AOKI |
| 8th Author's Affiliation | R&D Department, AU Optronics Corporation |
| 9th Author's Name | Chih-Che KUO |
| 9th Author's Affiliation | R&D Department, AU Optronics Corporation |
| Date | 2015-01-23 |
| Paper # | EID2014-47 |
| Volume (vol) | vol.114 |
| Number (no) | 407 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |