Image sensor with electron and hole collection electrodes
US10652486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Oct 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/803
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Imaging apparatus (100, 200, 300) includes a photosensitive medium (302) configured to convert incident photons into pairs of electrons and holes. An array of pixel circuits (304) is formed on a semiconductor substrate (305). Each pixel circuit defines a respective pixel and includes an electron-collecting electrode (306, 502) in contact with the photosensitive medium at a first location in the pixel and a hole-collecting electrode (308, 504) in contact with the photosensitive medium at a second location in the pixel. Circuitry (800, 1000) is coupled to apply a positive potential to and collect the electrons from the electron-collecting electrode and to apply a negative potential to and collect the holes from the hole-collecting electrode and to output a signal indicative of an intensity of the incident photons responsively to the collected electrons and holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.