Imaging device including unit pixel cell which includes capacitor circuit and feedback circuit
US9917119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2015 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Apr 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/811
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging device includes: a unit pixel cell comprising: a photoelectric converter generating an electric signal and comprising a first and second electrodes and a photoelectric conversion film located therebetween, the first electrode being located on a light receiving side of the photoelectric conversion film, a signal detection circuit detecting the electric signal and comprising a first transistor and a second transistor that are connected to the second electrode, the first transistor amplifying the electric signal, and a capacitor circuit comprising a first capacitor and a second capacitor having a capacitance value larger than that of the first capacitor that are serially connected to each other, the capacitor circuit being provided between the second electrode and a reference voltage; and a feedback circuit comprising the first transistor and an inverting amplifier and negatively feeding back the electric signal to the second transistor via the first transistor and the inverting amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.