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US 11,537,002 B1Granted
Full color reflective display including a phase change material
AssigneeSharp Kabushiki Kaisha
InventorsAndrew Acreman, Nathan James Smith
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Abstract
A reflective display apparatus is provided. The reflective display apparatus includes a textured sub-micron metal film textured in a periodic manner, a phase change material (PCM) layer, and a phase change control layer that is configured to change reflection properties of the textured sub-micron metal film by causing the PCM to switch between at least two of a plurality of phases.
Claims21
A reflective display apparatus, comprising, from a viewing side:
- a textured sub-micron metal film textured in a periodic manner;
- a phase change material (PCM) layer;
- a phase change control layer configured to change reflection properties of the textured sub-micron metal film by causing the PCM layer to switch between at least two of a plurality of phases;
- and
- a planarization layer is disposed between the phase change control layer and the PCM layer, wherein:
- the planarization layer is topographically flat at an interface of the planarization layer and the phase change control layer, and
- at an interface of the planarization layer and the PCM layer, the planarization layer conforms to a topology of the textured sub-micron metal film.
4 more elements
Dependencies are inferred from the claim text.