Back to results
US 2021/0200149 A1Published application
Method, apparatus and system providing holographic layer as micro-lens and color filter array in an imager
AssigneeMicron Technology, Inc.
InventorAlexander Mokhnatyuk
Life of this patent
Estimating the term…
Abstract
A method, apparatus, and system that provides a holographic layer as a micro-lens array and/or a color filter array in an imager. The method of writing the holographic layer results in overlapping areas in the hologram for corresponding adjacent pixels in the imager which increases collection of light at the pixels, thereby increasing quantum efficiency.
Claims20
An optical layer for use with a pixel array, the optical layer comprising:
- a hologram including a plurality of elliptical areas,
- wherein:
- each elliptical area of the plurality of elliptical areas corresponds to a respective pixel of the pixel array, and
- the hologram is configured (a) to filter colors of light incident on the optical layer and/or (b) to focus the light onto pixels of the pixel array.
1 more element
A semiconductor structure, comprising:
- a substrate;
- and
- an optical layer formed over the substrate, the optical layer including a hologram having a plurality of elliptical areas,
- wherein:
- each elliptical area of the plurality of elliptical areas corresponds to a respective pixel of a pixel array, and
- the hologram is configured (a) to filter colors of light incident on the semiconductor structure and/or (b) to focus the light.
3 more elements
Dependencies are inferred from the claim text.