Electrophoretic display device and method of producing the same
First Claim
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1. An electrophoretic display device for executing a display by dispersing charged particles in a liquid and moving the charged particles under application of an electric field, the device comprising:
- a first substrate;
a film mounted on the first substrate and forming a closed portion having a volume with a surface of the first substrate; and
a liquid positioned in the closed portion, with charged particles being dispersed in the liquid, wherein the first substrate has a pair of electrodes formed by a planar electrode under the closed portion and an annular electrode surrounding the closed portion, and voltage is applied between the pair of electrodes to move the charged particles along a plane of the substrate to execute a display.
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Abstract
An electrophoretic display device executes a display on the basis of dispersing charged particles in a liquid and moving the charged particles under application of an electric field. The device includes a first substrate having an electrode, a film mounted on the first substrate and forming a closed portion with a surface of the first substrate, and a liquid positioned in the closed portion, with charged particles being dispersed in the liquid.
34 Citations
28 Claims
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1. An electrophoretic display device for executing a display by dispersing charged particles in a liquid and moving the charged particles under application of an electric field, the device comprising:
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a first substrate;
a film mounted on the first substrate and forming a closed portion having a volume with a surface of the first substrate; and
a liquid positioned in the closed portion, with charged particles being dispersed in the liquid, wherein the first substrate has a pair of electrodes formed by a planar electrode under the closed portion and an annular electrode surrounding the closed portion, and voltage is applied between the pair of electrodes to move the charged particles along a plane of the substrate to execute a display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of producing an electrophoretic display device for executing a display by dispersing charged particles in a liquid and moving the charged particles under application of an electric field, the method comprising:
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a step of forming, on a surface of a substrate, a region of a higher affinity to the liquid and a region of a lower affinity;
a step of forming a droplet of the liquid, in which the charged particles are dispersed, in the region of the higher affinity; and
a step of covering the surface of the liquid droplet not in contact with the substrate with a film. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An electrophoretic display device comprising:
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a substrate having a pair of electrodes;
a liquid droplet disposed in contact with the substrate;
charged particles dispersed in the liquid droplet; and
a film covering the surface of the liquid droplet to confine the liquid droplet in a closed portion, wherein the electrodes are formed by a planar electrode under the closed portion and an electrode surrounding the closed portion in the same shape as the film, and voltage is applied between the electrodes to move the charged particles to the planar electrode or to the surrounding electrode in accordance with the polarity of the voltage thereby to execute a display. - View Dependent Claims (27, 28)
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Specification