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Samsung patents image sensor with adjustable anti-reflection layer

Patent drawing
Patent drawing from the official filing.

Samsung describes an image sensor design that places a conductive layer between insulating layers to reduce unwanted reflections. This layer covers the pixel area but avoids the edge sections where electrical connections are located, allowing voltage to be applied to control light behavior.

Why it mattersThis design could help improve camera quality by better managing how light hits the sensor, which is a standard goal in smartphone and camera hardware development.

In the filing’s own words

Provided is an image sensor, which includes a first substrate that has a first surface and a second surface opposite to the first surface, and includes a pixel array area and an edge area, the edge area including a first conductive pad; an anti-reflection structure on the second surface; a pixel isolator in the first substrate and defining and separating pixels; and a micro lens array that is disposed on the anti-reflection structure, in which the anti-reflection structure includes a first insulating layer, a conductive layer, a second insulating layer, and a third insulating layer sequentially stacked, the conductive layer is on the pixel array area, and is not at least in a portion of the edge area where the first conductive pad is arranged, and a voltage is configured to be applied to the conductive layer.

What exactly they claim (claim 1)

1. An image sensor, comprising: a first substrate that has a first surface and a second surface opposite to the first surface, and includes a pixel array area and an edge area, the edge area including first conductive pad; an anti-reflection structure on the second surface; a pixel isolator in the first substrate defining and separating pixels; and a micro lens array on the anti-reflection structure, wherein the anti-reflection structure includes a first insulating layer and a conductive layer that are sequentially stacked, the conductive layer is on the pixel array area, and is not at least in a portion of the edge area where the first conductive pad is.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
IMAGE SENSOR
Publication number
US20260324111A1
Application number
19716594
Filed
Jun 23, 2026
Published
Oct 15, 2026
Inventors
2
Claims
20

Classified under

H10F 39/805 Electricity & electronicsG02B 1/116 Physics & computingH10F 39/024 Electricity & electronicsH10F 39/182 Electricity & electronicsH10F 39/8053 Electricity & electronicsH10F 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.