Electrowetting display device configuration for reflective and transmissive modes
AssigneeAmazon Technologies, Inc.
InventorsOlivier Rainaut, Toru Sakai
Life of this patent
Estimating the term…
Abstract
An electrowetting display device is presented. The device includes a top support plate including a top surface and a bottom surface. A viewing surface of the device is over the top surface of the top support plate. A bottom support plate is positioned opposite the top support plate. A plurality of pixel walls are formed over a bottom surface of the top support plate. The plurality of pixel walls are associated with an electrowetting pixel and define a portion of a volume containing at least a portion of a first fluid and a second fluid. A transparent pixel electrode is on the top support plate and a common electrode is over a top surface of the bottom support plate. The common electrode includes a transparent material.
Claims20
An electrowetting display device, comprising:
- a top support plate having a top surface and a bottom surface opposite the top surface;
- a bottom support plate having a top surface and a bottom surface, the bottom support plate being opposite the top support plate;
- an oil between the top support plate and the bottom support plate;
- an electrolyte fluid between the top support plate and the bottom support plate, the electrolyte fluid being immiscible with the oil;
- a plurality of pixel walls over the bottom surface of the top support plate, wherein the bottom surface of the top support plate is between the plurality of pixel walls and the top surface of the top support plate, the plurality of pixel walls being associated with an electrowetting pixel and defining a portion of a volume containing at least a portion of the oil and the electrolyte fluid;
- a transparent pixel electrode on the top support plate for applying a voltage within the electrowetting pixel to cause relative displacement of the oil within the electrowetting pixel to modify a reflectance of the electrowetting pixel;
- a reflector on the top surface of the bottom support plate;
- and
- a color filter on the reflector, the color filter allowing propagation of visible light of a first color and preventing propagation of visible light of a second color.
A device, comprising:
- a top support plate including a top surface and a bottom surface and a viewing surface of the device is over the top surface of the top support plate;
- a bottom support plate opposite the top support plate;
- a plurality of pixel walls over a bottom surface of the top support plate, the plurality of pixel walls being associated with an electrowetting pixel and defining a portion of a volume containing at least a portion of a first fluid and a second fluid;
- a transparent pixel electrode on the top support plate;
- and
- a common electrode over a top surface of the bottom support plate, the common electrode including a transparent material.
A device, comprising:
- a top support plate;
- a bottom support plate opposite the top support plate;
- a plurality of pixel walls over a bottom surface of the top support plate, the plurality of pixel walls being associated with an electrowetting pixel and defining a portion of a volume containing at least a portion of a first fluid and a second fluid;
- a pixel electrode on the top support plate, the pixel electrode including a transparent electrode material;
- and
- a reflector on the bottom support plate.
Dependencies are inferred from the claim text.