Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2005-04-12
2005-04-12
Lester, Evelyn (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S270000, C359S272000, C359S274000, C252S586000
Reexamination Certificate
active
06879424
ABSTRACT:
The present invention relates to a composition and to a display device having the composition positioned between electrodes. The composition contains: (a) a compound that undergoes a reversible redox reaction to generate a pH gradient between the two electrodes, (b) an indicator dye, (c) a charge transport material, and optionally, (d) a matrix material and (e) an opacifier, and (f) secondary redox couple wherein components (a), (b), and (c) are different from one another and the standard reduction potential of component (a) is less than the standard reduction potential for the other components. Depending on the electric field present between the electrodes, a display image may be generated.
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Babinec Susan J.
Chen Yu
Dermody Daniel L.
Vincent John B.
Aveso, Inc.
Katten Muchin Zavis & Rosenman
Lester Evelyn
Paniaguas John S.
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