Methods for achieving improved color in microencapsulated electrophoretic devices
First Claim
1. A method of manufacturing a color electrophoretic display comprising the steps of:
- (a) providing a substrate having at least two electrodes disposed thereon;
(b) selectively depositing a first plurality of electrophoretic display elements in substantial registration with a first electrode, each of said first plurality of display elements comprising a capsule containing a plurality of a first species of particles, said first species of particles responsive to a first applied electric field and having a first optical property; and
(c) selectively depositing a second plurality of electrophoretic display elements in substantial registration with a second electrode, each of said second plurality of display elements comprising a capsule containing a plurality of a second species of particles, said second species of particles responsive to a second applied electric field and having a second optical property.
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Abstract
A method for manufacturing a full color, reflective display includes the steps of depositing a first plurality of electrophoretic display elements in substantial registration with a first electrode and a second plurality of electrophoretic display elements in substantial registration with a second electrode. The electrophoretic display elements include a capsule containing a species of particles dispersed in a suspending fluid. The selective deposition of the display elements can be achieved by ink-jet printing methods, screen printing methods or other printing methods. In some embodiments the electrodes are printed onto the substrate before selective deposition of the display elements, while in other embodiments the substrate is provided having the electrodes already disposed on it. In still other embodiments, the sequence of printing of electrodes and electrophoretic display elements can be varied.
605 Citations
14 Claims
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1. A method of manufacturing a color electrophoretic display comprising the steps of:
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(a) providing a substrate having at least two electrodes disposed thereon; (b) selectively depositing a first plurality of electrophoretic display elements in substantial registration with a first electrode, each of said first plurality of display elements comprising a capsule containing a plurality of a first species of particles, said first species of particles responsive to a first applied electric field and having a first optical property; and (c) selectively depositing a second plurality of electrophoretic display elements in substantial registration with a second electrode, each of said second plurality of display elements comprising a capsule containing a plurality of a second species of particles, said second species of particles responsive to a second applied electric field and having a second optical property. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of manufacturing an electrophoretic display comprising the steps of:
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(a) providing a substrate; (b) selectively depositing upon said substrate at least two electrodes; (c) selectively depositing a first plurality of electrophoretic display elements in substantial registration with a first electrode, each of said first plurality of display elements comprising a capsule containing a plurality of a first species of particles, said first species of particles responsive to a first applied electric field and having a first optical property; and (d) selectively depositing a second plurality of electrophoretic display elements in substantial registration with a second electrode, each of said second plurality of display elements comprising a capsule containing a plurality of a second species of particles, said second species of particles responsive to a second applied electric field and having a second optical property. - View Dependent Claims (13, 14)
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Specification