Methods for driving electro-optic displays
First Claim
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1. A method for updating a bistable electro-optic display having a plurality of pixels, and drive means for applying electric fields independently to each of the pixels to vary the display state of the pixel, each pixel having at least three different display states, the method comprising:
- writing an image on the display using a first drive scheme capable of driving pixels to said at least three different display states; and
thereafter varying the image on the display using a second drive scheme, the second drive scheme making use of only two gray levels, at least one of which is not an extreme optical state of the pixel.
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Abstract
A bistable electro-optic display is updated by writing an image on the display using a first drive scheme capable of driving pixels to multiple gray levels, and thereafter varied using a second drive scheme using only two gray levels, at least one of which is not an extreme optical state of the pixel.
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Citations
23 Claims
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1. A method for updating a bistable electro-optic display having a plurality of pixels, and drive means for applying electric fields independently to each of the pixels to vary the display state of the pixel, each pixel having at least three different display states, the method comprising:
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writing an image on the display using a first drive scheme capable of driving pixels to said at least three different display states; and thereafter varying the image on the display using a second drive scheme, the second drive scheme making use of only two gray levels, at least one of which is not an extreme optical state of the pixel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A bistable electro-optic display having a plurality of pixels, and drive means for applying electric fields independently to each of the pixels to vary the display state of the pixel, each pixel having at least three different display states, wherein the drive means is arranged to:
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write an image on the display using a first drive scheme capable of driving pixels to said at least three different display states; and thereafter vary the image on the display using a second drive scheme, the second drive scheme making use of only two gray levels, at least one of which is not an extreme optical state of the pixel. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification