Image sensor
US9299733B2 · kind B2 · utility
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20Claims
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Assignee
Inventor
Key dates
| Filing date | Mar 17, 2015 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Mar 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8067
Abstract
An image sensor is formed by a pixel array including a plurality of pixels. Certain ones of the pixels include, above their active areas, a first optical grating formed of periodically spaced apart parallel strips separated from the active area by a first insulator. Those pixels further include, in another metal level, a second optical grating formed of periodically spaced apart parallel strips separated from the first grating by a second insulator. The second optical grating is laterally shifted with respect to the first grating in a direction orthogonal to a longitudinal direction of the parallel strips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.