Thin film transistor type photo sensor
US6242769A · kind A · utility
4Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/6723
Abstract
A TFT type optical detecting sensor includes a sensor TFT for generating optical current by detecting light reflected from an object, a storage capacitor for storing charges of the optical current, and a switching TFT for controlling releasing of the charges stored in the storage capacitor. The storage capacitor is made of a transparent conductive material, such that light is transmitted from a light source through the storage capacitor to the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.