Four shared pixel with phase detection and full array readout modes
US10187600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/199
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel cell has four maskless phase detection photodiodes sharing the same readout amplifier, microlens and filter color. The four photodiodes are configured to operate in two adjacent pairs wherein the two adjacent pairs of photodiodes are separated by a light guide and are positioned under the single microlens such that light incident in a first direction is collected in a first pair of photodiodes of the two adjacent pairs of photodiodes and light incident in a second direction is collected in a second pair of photodiodes of the two adjacent pairs of photodiodes. The microlens has a plano-convex shape which causes light to be incident in two directions on photodiodes positioned under each of two sides of the microlens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.