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US 7,375,870 B2Granted
Enhancement electrode configuration for electrically controlled light modulators
AssigneeNokia Corporation
InventorMarcus Schorpp
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AssigneeNokia Corporation
InventorMarcus Schorpp
Estimating the term…
An electrically controlled light modulator device comprises at least one cell, where two deformable dielectric layers meet at an interface, at least one of said layers consisting of viscoelastic relief forming gel. A first support electrode structure and a second signal electrode structures are arranged on separate sides of the dielectric layers in order to create an electric field passing through said layers and in order to create surface reliefs on the viscoelastic gel layer. According to the invention, a third enhancement electrode structure is arranged in the proximity of the first signal electrode structure. Applying enhancement signal voltage between the enhancement electrode structure and the signal electrode structure concentrates locally the electric field passing through the two deformable dielectric layers and therefore enhances the amplitude of the deformation of the viscoelastic gel layer.
A device comprising at least
A display device comprising a plurality of light modulating cells, each cell in turn comprising:
A method for creating and flattening a relief in a viscoelastic material layer by using a first electrode structure, a second electrode structure opposite said first electrode structure, an interface between a first deformable dielectric layer and a second deformable dielectric layer, said layers being arranged between said first and second electrode structures, said first deformable dielectric layer consisting of a viscoelastic relief-forming material, and an enhancement electrode structure arranged in the proximity of said second electrode structure, said method comprising:
Dependencies are inferred from the claim text.