Capacitance detecting device
US7116116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Nov 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To provide a superior capacitance detecting device, a capacitance detecting device includes M row lines and N column lines that are arranged in a matrix, capacitance detecting elements provided at intersections therebetween, and power lines. The capacitance detecting element includes a signal detecting element and a signal amplifying element. The signal detecting element includes a capacitance detecting electrode, a capacitance detecting dielectric film, and a reference capacitor. The signal amplifying element is composed of a thin film semiconductor device having a gate electrode, a gate insulating film, and a semiconductor film, and an electrode of the reference capacitor is connected to the row line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.