Full color reflective display with multichromatic sub-pixels
AssigneeE Ink Corporation
InventorsPaul Drzaic, Russell J. Wilcox
Life of this patent
Estimating the term…
Abstract
A full color, reflective display having superior saturation and brightness is achieved with a novel display element comprising multichromatic elements. In one embodiment a capsule includes more than three species of particles which differ visually. One embodiment of the display employs three sub-pixels, each sub-pixel comprising a capsule including three species of particles which differ visually. Another embodiment of the display employs color filters to provide different visual states to the user. The display element presents a visual display in response to the application of an electrical signal to at least one of the capsules.
Claims21
A multichromatic electrophoretic display element comprising:
- a first capsule comprising a first white particle and a red particle;
- a second capsule comprising a second white particle and a green particle;
- a third capsule comprising a third white particle and a blue particle;
- and
- three filters each adjacent to one of the capsules, wherein the particles in the three capsules move to present the multichromatic display in response to an applied electrical field, and wherein a white visual appearance of the display is provided by at least one of the white particles.
A multichromatic electrophoretic display element comprising:
- a first capsule comprising a first white particle and a cyan particle;
- a second capsule comprising a second white particle and a magenta particle;
- a third capsule comprising a third white particle and a yellow particle;
- and
- three filters each adjacent to one of the capsules, wherein the particles in the three capsules move to present the multichromatic display in response to an applied electrical field, and wherein a white visual appearance of the display is provided by at least one of the white particles.
A method of manufacturing a multichromatic electrophoretic display element, comprising the steps of:
- providing a first capsule comprising a first white particle and a red particle;
- printing a first filter adjacent to the first capsule;
- providing a second capsule comprising a second white particle and a green particle;
- printing a second filter adjacent to the second capsule;
- providing a third capsule comprising a third white particle and a blue particle;
- and
- printing a third filter adjacent to the third capsule, such that when an electric signal is applied to at least one of the capsules, the element is capable of presenting a multichromatic visual display in response to the signal, and such that when a white visual display is presented, it is provided by at least one of the white particles.
A method of manufacturing a multichromatic electrophoretic display element, comprising the steps of:
- providing a first capsule comprising a first white particle and a cyan particle;
- printing a first filter adjacent to the first capsule;
- providing a second capsule comprising a second white particle and a magenta particle;
- printing a second filter adjacent to the second capsule;
- providing a third capsule comprising a third white particle and a yellow particle;
- and
- printing a third filter adjacent to the third capsule, such that when an electric signal is applied to at least one of the capsules, the element is capable of presenting a multichromatic visual display in response to the signal, and such that when a white visual display is presented, it is provided by at least one of the white particles.
Dependencies are inferred from the claim text.