Optical sensors and methods for forming the same
US11315964B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Feb 1, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Mar 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/413
Abstract
An optical sensor includes pixels disposed in a substrate. A light collimating layer is disposed on the substrate and includes a transparent layer, a light-shielding layer, and transparent pillars. The transparent layer blanketly disposed on the substrate covers the pixels and the region between the pixels. The light-shielding layer is disposed on the transparent layer and between the transparent pillars. The transparent pillars penetrating through the light-shielding layer are correspondingly disposed on the pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.