Novel Fluorinated silicon (IV) phthalocyanines and naphthalocyanines for electrophoretic, magnetophoretic or electromagnetophoretic display
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United States of America Patent
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May 15, 2003
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May 17, 2002
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Abstract
This invention relates to stable colorants of high extinction coefficient and high solubility or dispersibility for an electrophoretic, magnetophoretic or electromagnetophoretic display. More particularly, it relates to stable colorants for a microcup-based electrophoretic or electromagnetophoretic display the cells of which are filled with charged and/or magnetic particles dispersed in a halogenated, preferably a fluorinated, solvent. The use of the stable colorants allows the display to be of superior contrast ratio and longevity, and suitable for high-quality imagery applications.
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