Display device
First Claim
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1. A display device comprising:
- picture elements having at least one first fluid and a second fluid immiscible with each other within a space between a first support plate and a second support plate,the second fluid being electroconductive or polar,a picture element of the device being electrically switchable between at least a first state without a voltage applied and a second, different state with a voltage applied, in which in the second state the second fluid adjoins an area of the first support plate, andin the first state the first fluid adjoins the said area of the first support plate, and the first fluid forum a first fluid layer and the second fluid forms a second fluid layer on the first fluid layer, the first fluid layer being arranged between the second fluid layer and the first support plate,in which said states provide a display effect over the area, and the first fluid is confined to the space of the picture element in the first state and in the second state.
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Abstract
Display device based on layer break up or layer displacement having at least two different states, in which one of the fluids (5) e.g oil in a first state adjoins at least a first support plate (3) and in the second state the other fluid (6) at least partly adjoins the first support plate. In one embodiment a picture element corresponds to a substantially closed space and in the first state the other fluid layer substantially completely adjoins both support plates and is divided in two sub-layers. This makes it possible on the one hand to use lower voltages to make displacement occur. On the other hand this opens the opportunity to color displays.
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Citations
33 Claims
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1. A display device comprising:
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picture elements having at least one first fluid and a second fluid immiscible with each other within a space between a first support plate and a second support plate, the second fluid being electroconductive or polar, a picture element of the device being electrically switchable between at least a first state without a voltage applied and a second, different state with a voltage applied, in which in the second state the second fluid adjoins an area of the first support plate, and in the first state the first fluid adjoins the said area of the first support plate, and the first fluid forum a first fluid layer and the second fluid forms a second fluid layer on the first fluid layer, the first fluid layer being arranged between the second fluid layer and the first support plate, in which said states provide a display effect over the area, and the first fluid is confined to the space of the picture element in the first state and in the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification