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Samsung patents image sensor with nano posts to split light colors

Samsung describes an image sensor design that uses tiny nano posts to separate incoming light into different colors before it hits the sensor. Each nano post has two layers with different light-bending properties to help manage how light is processed.

Why it mattersThis could lead to sharper or more accurate camera images in phones and other devices by improving how light is captured at a microscopic level.

In the filing’s own words

An image sensor according to at least one example embodiment includes a sensor substrate including a photoelectric conversion region; a spacer layer positioned on the sensor substrate; and a color separation lens layer positioned on the spacer layer, wherein the color separation lens layer includes a plurality of nano posts and a dielectric layer positioned between the plurality of nano posts, the nano post includes a first refraction layer and a second refraction layer, the second refraction layer is positioned along the bottom surface and the side surface of the first refraction layer, and the refractive index of the first refraction layer is larger than the refractive index of the second refraction layer.

What exactly they claim (claim 1)

1. An image sensor comprising: a sensor substrate including a photoelectric conversion region; a spacer layer on the sensor substrate; and a color separation lens layer spaced apart from the sensor substrate with the spacer layer between the sensor substrate and the color separation lens layer, wherein the color separation lens layer includes a plurality of nano posts and a dielectric layer between the plurality of nano posts, each of the plurality of nano posts include a first refraction layer and a second refraction layer, the second refraction layer is positioned along a bottom surface of the first refraction layer and a side surface of the first refraction layer, and a refractive index of the first refraction layer is larger than a refractive index of the second refraction layer.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
IMAGE SENSOR
Publication number
US20260271420A1
Application number
19328865
Filed
Sep 15, 2025
Published
Sep 10, 2026
Inventors
6
Claims
20

Classified under

H10F 39/8063 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.