Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2007-04-24
2007-04-24
Harrington, Alicia M. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C345S107000, C430S032000
Reexamination Certificate
active
11110621
ABSTRACT:
Electrophoretic display devices and contactless communication media are provided. A display electrode pattern, a first voltage application circuit to apply a voltage between the display electrode pattern and a transparent electrode, and a wiring pattern that electrically conducts the first voltage application circuit and the display electrode pattern are provided on the side of the back surface of a substrate. Also, a BG electrode pattern, a loop pattern of a predetermined height, and the transparent electrode are provided on the side of the surface of the substrate. Multiple electrophoretic particles and a dispersion medium to disperse the electrophoretic particles are enclosed inside the loop pattern and between the substrate and the transparent electrode. A voltage is applied between the transparent electrode and the display electrode pattern by the first voltage application circuit thereby causing the electrophoretic particles to migrate in the dispersion medium to display a desired image.
REFERENCES:
patent: 2612472 (1997-02-01), None
patent: 2000-322549 (2000-11-01), None
Harness & Dickey & Pierce P.L.C.
Harrington Alicia M.
Seiko Epson Corporation
Thomas Brandi
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