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US 2009/0015545 A1Published application
Imaging apparatus and operation method of the same
AssigneeHitachi, Ltd.
InventorsMidori Kato, Masayoshi Ishibashi
Life of this patent
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Abstract
To provide a low-voltage-driven, low-power-consumption, electrophoretic imaging device and an operation method of the same. An electrophoretic imaging device includes an electrode in contact with an electrophoretic dispersion liquid in which particles are dispersed, and a holding electrode disposed on a side of the electrode opposed on a side thereof in contact with the electrophoretic dispersion liquid with an insulating layer interposed between the electrode and holding electrode.
Claims15
A method for operating an electrophoretic imaging device including:
- first and second substrates disposed so as to be opposed to each other with a gap therebetween;
- a first electrode disposed on a main surface of the first substrate;
- a second electrode disposed on a main surface of the second substrate so as to be opposed to the first electrode;
- a partition wall disposed in the gap, the partition wall partitioning the gap into a plurality of partitions;
- an electrophoretic dispersion liquid with which a space enclosed by the first electrode, the second substrate, and the partition wall is filled, the electrophoretic dispersion liquid including ions;
- a migratable, charged particle mixed into the electrophoretic dispersion liquid;
- and a holding electrode disposed away from the second electrode on a side of the second electrode remote from the first electrode, the holding electrode being electrically insulated from the second electrode and the electrophoretic dispersion liquid, the method comprising the steps of:
- applying a predetermined voltage between the first and second electrodes;
- and
- after a given time has elapsed, opening a circuit between the first and second electrodes to apply a voltage larger than the predetermined voltage between the first electrode and the holding electrode.
7 more elements
An electrophoretic imaging device comprising:
- first and second substrates disposed so as to be opposed to each other with a gap therebetween;
- a first electrode disposed on a main surface of the first substrate;
- a second electrode disposed on a main surface of the second substrate so as to be opposed to the first electrode;
- a partition wall disposed in the gap, the partition wall partitioning the gap into a plurality of partitions;
- an electrophoretic dispersion liquid with which a space enclosed by the first electrode, the second substrate, and the partition wall is filled, the electrophoretic dispersion liquid including ions;
- a migratable, charged particle mixed into the electrophoretic dispersion liquid;
- and
- a holding electrode disposed away from the second electrode on a side of the second electrode remote from the first electrode, the holding electrode being electrically insulated from the second electrode and the electrophoretic dispersion liquid.
5 more elements
Dependencies are inferred from the claim text.