Electrophoretic display with sub relief structure for high contrast ratio and improved shear and/or compression resistance
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United States of America Patent
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Sep 21, 2004
Grant Date -
Mar 6, 2003
app pub date -
Aug 27, 2002
filing date -
Aug 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to an electrophoretic display comprising isolated cells of well-defined shape, size and aspect ratio which cells have internal sub relief structures and are filled with charged pigment particles dispersed in a dielectric solvent. The display shows an improved contrast ratio and resistance against shear and compression pressures. The display may have the traditional up/down switching mode, an in-plane switching mode or a dual switching mode.
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