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US 7,397,174 B2Granted
Image displaying apparatus
AssigneeCanon Kabushiki Kaisha
InventorYasushi Shioya
Life of this patent
Estimating the term…
Abstract
An image displaying apparatus which can easily fix an electrode plate to a predetermined position is provided. An electric potential of the electrode plate, a distance between the electrode plate and a first substrate, and a distance between the electrode plate and a second substrate are set so that a Coulomb attracting force acts in the direction in which the electrode plate is come into contact with a shoulder portion of a spacer.
Claims4
An image displaying apparatus comprising:
- a first substrate having a first conductor set as a first electric potential;
- a second substrate having a second conductor set as a second electric potential different from said first electric potential;
- an electrode plate arranged between said first substrate and said second substrate and set as a third electric potential;
- and
- a spacer which has a narrower width portion and a wider width portion, penetrates through said electrode plate at said narrower width portion, fixes said electrode plate in said wider width portion, and defines a spacing between said first substrate and said second substrate,
- wherein the wider width portion of said spacer is located between said first substrate and said electrode plate and the following relation is satisfied:
- V1/d1>V2/d2
- where,
- V1:
- electric potential difference between the first electric potential and the third electric potential
- V2:
- electric potential difference between the second electric potential and the third electric potential
- d1:
- distance between the first substrate and the electrode plate
- d2:
- distance between the second substrate and the electrode plate.
13 more elements
Dependencies are inferred from the claim text.