Improved microencapsulated electrophoretic display

Details Improved microencapsulated electrophoretic display Improved microencapsulated electrophoretic display

G - Physics

02

F

G02F 1/167 (2006.01)

Patent

CA 2283752

An application-ready electrophoresis material includes a carrier and a dispersion of microcapsules therein, the microcapsules each containing a plurality of phases therein. At least some of the phases contrast visually and exhibit differential responsiveness to an electric field, such that application of the field determines the visual appearance of the microcapsules. The material exhibits stability such that the visual appearance persists despite removal of the field. In one aspect, the invention provides for enhanced stability of the visual appearance. In another aspect, the reflectivity of at least one of the phases is enhanced. In another aspect, one of the phases is particulate in nature and emits visible radiation.

Un matériau d'électrophorèse prêt à l'application comprend un support contenant une dispersion de microcapsules, chacune des microcapsules contenant une pluralité de phases. Au moins certaines des phases présentent un contraste visuel et une sensibilité différentielle à un champ électrique, de telle sorte que l'application du champ détermine l'apparence visuelle des microcapsules. Le matériau présente une stabilité de telle sorte que l'apparence visuelle persiste après le retrait du champ. Dans un aspect, l'invention procure une meilleure stabilité de l'apparence visuelle. Dans un autre aspect, la réflexivité d'au moins une des phases est accrue. Dans encore un autre aspect, une des phases est de nature particulaire et émet un rayonnement visible.

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