Display apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Togano, Tsutomu Ikeda, Nobutaka Ukigaya
Life of this patent
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Abstract
There is a demand for preventing display quality of a display apparatus from deteriorating. When charged particles (9) are attracted to a first electrode (3), the distribution density may not become uniform over the entire area A1 and only the distribution density in the periphery of the first electrode (3) (see reference numeral A3) may be locally reduced. The present invention places a colored layer (5) having the same color as the color of charged particles in this area A3. Therefore, even if the distribution density is low, the low density is hardly visually recognized, making it possible to prevent the display quality from deteriorating.
Claims15
A reflective display apparatus that creates a display by moving particles, comprising:
- a front substrate and a back substrate;
- a plurality of charged particles sandwiched between said front substrate and back substrate;
- a first electrode and a second electrode placed on said back substrate;
- a support member provided to keep a distance between said front substrate and back substrate;
- and
- a colored area provided on said back substrate,
- wherein reflecting means is provided in a space partitioned by said support member and said colored area is placed in such a way that the surface of projection on the back substrate of said second electrode and the surface of projection on the back substrate of said colored zone at least contact with each other.
An electrophoresis display apparatus comprising:
- a first substrate and second substrate arranged with a predetermined gap in between;
- an insulating liquid and a plurality of charged particles enclosed in the gap between these substrates;
- a first electrode placed along said first substrate over a relatively wide area of a pixel;
- and
- a second electrode between which and said first electrode a voltage is applied, said electrophoresis display apparatus carrying out a display by applying a voltage to these electrodes and moving said charged particles,
- wherein said charged particles are colored in a first color,
- at least a portion of the area where said first electrode is placed in which the density of said charged particles cannot be kept high is colored in substantially the same color as said first color,
- at least a portion of the area where said first electrode is placed in which the density of said charged particles can be kept high is colored in a second color,
- when said charged particles are placed so as to cover said first electrode, said first color is visually recognized, and
- when said charged particles are attracted to said second electrode and accumulated, said second color is visually recognized.
Dependencies are inferred from the claim text.