Display medium, display device and display method
First Claim
Patent Images
1. A display medium, comprising at least:
- a pair of substrates, at least one of the substrates having optical transparency;
a dispersion medium positioned in a gap between the pair of substrates;
one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, charged with a positive or negative polarity and included in the dispersion medium; and
a holder disposed between the pair of substrates and at least partially charged with a polarity opposite to that of all the kinds of the electrophoretic particles, the holder having a function of holding the electrophoretic particles.
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Abstract
A display medium includes at least: a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, included in the dispersion medium; and a holder disposed between the pair of substrates, the holder having a function of holding the electrophoretic particles and a function of controlling, by an external voltage, a movement amount of the electrophoretic particles on the holder.
52 Citations
39 Claims
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1. A display medium, comprising at least:
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a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, charged with a positive or negative polarity and included in the dispersion medium; and a holder disposed between the pair of substrates and at least partially charged with a polarity opposite to that of all the kinds of the electrophoretic particles, the holder having a function of holding the electrophoretic particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A display device, comprising at least:
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a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, charged with a positive or negative polarity and included in the dispersion medium; a light-modulating layer disposed between the pair of substrates and including a holder at least partially charged with a polarity opposite to that of all the kinds of the electrophoretic particles, the holder having a function of holding the electrophoretic particles; a pair of electrodes respectively disposed on one substrate side and the other substrate side of the pair of substrates; and an electric field applicator that is connected to the pair of electrodes and applies an electric field to the dispersion medium. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A display method of switching a display by carrying out the following processes in any order, the method comprising:
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applying an electric field to a light-modulating layer that includes a dispersion medium, at least one kind of electrophoretic particles or at least two kinds of electrophoretic particles different in color from each other, included in the dispersion medium, and a holder having a function of holding the electrophoretic particles, the electric field forming a potential gradient and moving the electrophoretic particles via the holder, to localize the electrophoretic particles at one side of the light-modulating layer, thereby displaying a color due to the electrophoretic particles at the one side of the light-modulating layer at a maximum density; applying an electric field to the light-modulating layer, the electric field forming a potential gradient and moving the electrophoretic particles via the holder, to localize the electrophoretic particles at the other side of the light-modulating layer, thereby displaying a color due to the electrophoretic particles at the one side of the light-modulating layer at a minimum density; and applying an electric field to the light-modulating layer, the electric field forming a potential gradient and moving the electrophoretic particles via the holder, to localize the electrophoretic particles between the one side and the other side of the light-modulating layer, thereby displaying a color due to the electrophoretic particles at the one side of the light-modulating layer at a density smaller than the maximum density but larger than the minimum density. - View Dependent Claims (30, 31)
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32. A display medium, comprising at least:
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a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; at least one kind of electrophoretic particles or at least two kinds of electrophoretic particles different in color from each other, included in the dispersion medium; and a holder disposed between the pair of substrates, the holder including a non-woven fabric and having a function of holding the electrophoretic particles. - View Dependent Claims (33, 34, 35)
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36. A display device, comprising at least:
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a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; at least one kind of electrophoretic particles or at least two kinds of electrophoretic particles different in color from each other, included in the dispersion medium; a light-modulating layer disposed between the pair of substrates and including a holder including a non-woven fabric, the holder having a function of holding the electrophoretic particles; a pair of electrodes respectively disposed on one substrate side and the other substrate side of the pair of substrates; and an electric field applicator that is connected to the pair of electrodes and applies an electric field to the dispersion medium. - View Dependent Claims (37, 38, 39)
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Specification