Solid-state image sensor, electronic apparatus, and control method of solid-state image sensor
US10348986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jan 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/803
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To prevent the black dot phenomenon from occurring in a differential amplification-type solid-state image sensor.A signal-side amplifier transistor generates an output voltage corresponding to a signal current corresponding to one of a pair of differential input voltages by supplying the signal current from an output node to a common-phase node. A reference-side amplifier transistor supplies a reference current corresponding to the other one of the pair of differential input voltages to the common-phase node. A constant current source constantly controls a sum of the signal current and the reference current to be merged at the common-phase node. A bypass control unit connects the output node and the common-phase node and supplies the signal current having a value corresponding to a predetermined limit voltage to the common-phase node in a case in which the output voltage reaches the limit voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.