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US 8,786,935 B2Granted
Color electrophoretic display
AssigneeSiPix Imaging, Inc.
InventorRobert Sprague
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a color display device wherein each of the display cells is filled with an electrophoretic fluid comprising two types of charged pigment particles dispersed in a colored medium. Multiple colors of high quality may be achieved by the present invention.
Claims20
A display device comprising display cells, wherein each of said display cells is
- a) sandwiched between a first layer comprising a common electrode and a second layer comprising a pixel electrode, and
- b) filled with a display fluid comprising a first type of pigment particles which is white and a second type of pigment particles which is red, green or blue, and said two types of pigment particles are oppositely charged and are dispersed in a black solvent,
- wherein said black solvent comprises non-charged or slightly charged black particles dispersed in a clear and colorless solvent.
A display device comprising display cells, wherein each of said display cells is
- a) sandwiched between a first layer comprising a common electrode and a second layer comprising a pixel electrode, and
- b) filled with a display fluid comprising a first type of pigment particles which is white and a second type of pigment particles which is red, green or blue, and said two types of pigment particles are oppositely charged and are dispersed in a colored solvent which has a color complementary to the color of the second type of pigment particles,
- wherein the colored solvent comprises non-charged or slightly charged colored particles dispersed in a clear and colorless solvent.
A display device comprising display cells and a white background layer, wherein each of said display cells is
- a) sandwiched between a first layer comprising a common electrode and a second layer comprising a pixel electrode and at least one in-pane electrode, and
- b) filled with a display fluid comprising a first type of pigment particles which are white and a second type of pigment particles which are red, green or blue, and said two types of pigment particles are oppositely charged and are dispersed in a colored solvent which has a color complementary to the color of the second type of pigment particles,
- wherein the colored solvent comprises non-charged or slightly charged colored particles dispersed in a clear and colorless solvent.
Dependencies are inferred from the claim text.