Amazon Technologies, Inc.

Sridhar Guntaka

Toru Sakai

Karel Johannes Gerhardus Hinnen

An electrowetting display device includes a first support plate and a second support plate opposite the first support plate, and a plurality of pixel walls over the first support plate. The plurality of pixel walls are associated with an electrowetting pixel and define a volume containing at least a portion of an oil and an electrolyte fluid. The electrolyte fluid has a first refractive index. The electrowetting display device includes a pixel spacer between a first pixel wall in the plurality of pixel walls and the second support plate. A second refractive index of the pixel spacer is less than the first refractive index. The electrowetting display device includes a pixel electrode over the first support plate for applying a voltage within the electrowetting pixel to cause relative displacement of the oil and the electrolyte fluid.

Electrowetting display device with reflective pixel spacer

A system and method for an electrowetting display device are presented. The electrowetting display device includes a first support plate and a second support plate, A plurality of pixel walls associated with an electrowetting pixel are formed over the first support plate. A color filter is over the electrowetting pixel. The color filter allows propagation of visible light of a first color and prevents propagation of visible light of a second color. In an embodiment, the color filter includes a layer of light-absorbing photoresist that is patterned into a first plurality of regions and a second plurality of regions. Each region in the first plurality of regions has a first optical density and each region in the second plurality of regions has a second optical density so that the color filter has a non-uniform optical density.

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Eindhoven, Netherlands

Sridhar Guntaka