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US 7,639,571 B2Granted
Timepiece
AssigneeSeiko Epson Corporation
InventorsJunichiro Ishii, Manabu Akahane
Life of this patent
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Abstract
A timepiece has a display panel having electrophoretic particles between two opposing substrates, and a drive circuit unit having a display drive unit for applying an electric field between the substrates and a timekeeping unit for keeping time information. A plurality of first electrodes are rendered in the shapes of a plurality of symbols used to display time information content on one of the substrates, and a second electrode is disposed on the other substrate for applying a voltage between the first electrodes and the second electrode.
Claims6
A timepiece comprising:
- a display panel having electrophoretic particles between two opposing substrates;
- a drive circuit unit having a display drive unit for applying an electric field between the substrates and a timekeeping unit for keeping time information;
- a plurality of first electrodes being rendered in the shapes of a plurality of symbols used to display time information content on one of the substrates;
- and
- a second electrode being disposed on the other substrate for applying a voltage between the first electrodes and the second electrode,
- the plurality of first electrodes being rendered for each type of symbol,
- each of the first electrodes for the same type of symbol being rendered at a different position on the surface of the one of the substrates,
- each of the plurality of first electrodes for the same type of symbol being electrically connected to each other.
5 more elements
Dependencies are inferred from the claim text.