Claims
- 1. A method for writing and erasing an electric writeable medium comprising a backplane electrode, a display layer coupled to the backplane electrode, and a resistive layer coupled to the display layer, wherein the display layer includes a plurality of elements in an enabling medium, the method comprising:
applying a first voltage differential between a stylus and the backplane electrode, wherein the first voltage differential is sufficient to cause one or more of the elements in the display layer to display a first color; depositing charge on one or more portions of the resistive layer by applying the stylus to the resistive layer, wherein the resistive layer has a sufficiently high resistivity to substantially inhibit the deposited charge from spreading laterally through the resistive layer; and applying a second voltage differential, inverse to the first voltage differential, between the resistive layer and the backplane electrode, wherein the second voltage differential is sufficient to erase the elements in the display layer to display a second color.
- 2. The method of claim 1 wherein the resistive layer has a resistivity between about 106 Ohms/square and about 1010 Ohms/square.
- 3. The method of claim 1 wherein the resistive layer has a resistivity of about 108 Ohms/square.
- 4. A method for writing and erasing an electric writeable medium comprising a backplane electrode, a display layer coupled to the backplane electrode, a resistive layer coupled to the display layer, and a plurality of island electrodes coupled to the resistive layer, wherein the display layer includes a plurality of elements in an enabling medium, the method comprising:
applying a first voltage differential between a stylus and the backplane electrode, wherein the first voltage differential is sufficient to cause one or more of the elements in the display layer to display a first color; depositing charge on one or more island electrodes using the stylus, wherein the resistive layer has a sufficiently high resistivity to substantially inhibit the charge deposited on one island electrode from spreading laterally through the resistive layer to an adjoining island electrode; and applying a second voltage differential, inverse to the first voltage differential, between the resistive layer and the backplane electrode, wherein the second voltage differential is sufficient to cause the elements in the display layer to display a second color.
- 5. The method of claim 4 wherein the resistive layer has a resistivity between about 106 Ohms/square and about 1010 Ohms/square.
- 6. The method of claim 4 wherein the resistive layer has a resistivity of about 108 Ohms/square.
- 7. A method for writing and erasing an electric writeable medium comprising a backplane electrode, a display layer coupled to the backplane electrode, a photoconductive layer coupled to the display layer, and a plurality of island electrodes coupled to the photoconductive layer, wherein the display layer includes a plurality of elements in an enabling medium, the method comprising:
applying a first differential voltage between a stylus and the backplane electrode, wherein the first voltage differential is sufficient to cause one or more of the elements in the display layer to display a first color; depositing charge on one or more portions of the electric writeable medium by applying the stylus to at least one of the island electrodes; applying a second voltage differential, inverse to the first voltage differential, between the photoconductive layer and the backplane electrode, wherein the second voltage differential is sufficient to cause the elements in the display layer to display a second color; and illuminating the photoconductive layer to conduct the second differential voltage across the elements in the display layer.
- 8. An electric writeable medium comprising:
a layer of a conductive material; a first layer of a film coupled to the layer of conductive material; a display layer, coupled to the first layer of film, for writing or display of content, wherein the display layer includes a plurality of elements in an enabling medium; a second layer of a film coupled to the display layer; and a layer of resistive material coupled to the second layer of film.
- 9. The electric writeable medium of claim 8 wherein the film comprises a polyester film.
- 10. The electric writeable medium of claim 9 wherein the polyester film comprises polyethylene terephthalate polyester film.
- 11. The electric writeable medium of claim 8, further comprising a plurality of island electrodes coupled to the resistive layer.
- 12. An electric writeable medium comprising:
a layer of a conductive material; a first layer of a film coupled to the layer of conductive material; a display layer, coupled to the first layer of film, for writing or display of content, wherein the display layer includes a plurality of elements in an enabling medium; a second layer of a film coupled to the display layer; and a layer of photoconductive material coupled to the second layer of film.
- 13. The electric writeable medium of claim 12 wherein the film comprises a polyester film.
- 14. The electric writeable medium of claim 13 wherein the polyester film comprises polyethylene terephthalate polyester film.
- 15. The electric writeable medium of claim 12, further comprising a plurality of island electrodes coupled to the photoconductive layer.
RELATED APPLICATION AND CLAIM OF PRIORITY
[0001] This application claims priority to and incorporates by reference U.S. Provisional Application No. 60/482,587, entitled “Stylus Writing Architectures for Erasable Paper” and filed Jun. 25, 2003.
Provisional Applications (1)
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Number |
Date |
Country |
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60482587 |
Jun 2003 |
US |