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US 2026/0010022 A1Published application
Planar cell nanoheater design and cell architecture for programmable phase change filters
AssigneeSTMicroelectronics (Crolles 2) SAS
InventorsMarios BARLAS, Kirill SHIIANOV, Emmanuel JOSSE, Stephane MONFRAY
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Abstract
A phase change filter is formed by an arrangement of dots, wherein each dot is made of a phase change material. A heating layer of electrically conductive material extends under the arrangement of dots. Current passing through the heating layer changes the dots between two states to alter attenuation of light passing through the filter.
Claims18
A phase change filter, comprising:
- a plurality of phase change material dots;
- and
- a heating layer of electrically conductive material;
- wherein the heating layer comprises strips connected by fingers;
- wherein each pair of adjacent strips is connected by more than one finger;
- wherein the heating layer comprises a plurality of heating zones, each heating zone comprising one or more fingers;
- and
- wherein a phase change material dot of said plurality of phase change material dots is positioned on each heating zone.
5 more elements
A method of fabricating a phase change filter, comprising:
- forming a heating layer of electrically conductive material, the heating layer comprising strips connected by fingers;
- wherein each pair of adjacent strips is connected by more than one finger;
- wherein the heating layer comprises a plurality of heating zones, each heating zone comprising one or more fingers;
- and
- the heating layer comprising a plurality of heating zones, each heating zone comprising one or more fingers;
- and
- forming a plurality of phase change material dots, wherein a phase change material dot of said plurality of phase change material dots is positioned on each heating zone of the heating layer.
4 more elements
Dependencies are inferred from the claim text.