Biosensor and detection device
US10385377B2 · kind B2 · utility
2Cited by
1References
9Claims
0Family size
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Key dates
| Filing date | Sep 16, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jul 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2333/90206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A TFT biosensor includes a gate electrode (silicon substrate), a reference electrode, and enzyme that is fixed to an insulating substrate spatially separated from the gate electrode and the reference electrode. A pH variation in the vicinity of an ion-sensitive insulating film is induced by a reaction between the enzyme and a sensing object material. The TFT biosensor can detect a concentration of the sensing object material with high sensitivity by detecting the pH variation as a threshold voltage shift of characteristics of a gate-source voltage to a source-drain current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.