Optical sensor and method for forming the same
US10935805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Nov 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical sensor includes a plurality of pixels disposed in a substrate and a light collimating layer. The light collimating layer is disposed on the substrate. The light collimating layer includes a light-shielding layer, a plurality of transparent pillars, and a plurality of first dummy transparent pillars. The light-shielding layer is disposed on the substrate. The plurality of transparent pillars pass through the light-shielding layer and are disposed correspondingly on the plurality of pixels. The plurality of first dummy transparent pillars that pass through the light-shielding layer are disposed on a first peripheral region of the light collimating layer, wherein the plurality of first dummy transparent pillars surround the plurality of transparent pillars from a top view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.