Semiconductor device and electronic appliance using the same
US7531784B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2007 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jun 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/803
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object is to provide a photoelectric conversion device capable of detecting a wider range of illuminance without expansion of a range of an output voltage or output current. The photoelectric conversion device has a photoelectric conversion device including a photoelectric conversion element and an amplifier circuit electrically connected to the photoelectric conversion element, and a bias switching unit for reversing a bias to be applied to the photoelectric conversion device. The bias to be applied to the photoelectric conversion device is reversed with use of the bias switching unit, whereby the photoelectric conversion device can detect a wider range of illuminance without expansion of a range of an output voltage or output current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.