Sensor cell
US6657269B2 · kind B2 · utility
95Cited by
6References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Dec 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor cell comprises receiving means, which may be in the form of an electrode 10 coupled to the gate electrode of a thin film transistor T1. In one form of the invention a voltage supplied to the gate electrode of the transistor T1 via a switching transistor T7 is controlled in dependence upon the value of capacitance CA arising at the electrode from receipt of a sample for identification. Thus, the operation of transistor T1 can be used to identify the sample received by the electrode 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.