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US 5,345,251 AGranted
Electrophoretic display panel with interleaved cathode and anode
AssigneeCopytele, Inc.
InventorsFrank J. DiSanto, Denis A. Krusos
Life of this patent
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Abstract
An EPID electrode configuration includes a plurality of parallel, tined, interdigitized anode and cathode lines deposited upon a faceplate. A plurality of guard elements are provided between adjacent pairs of anode and cathode lines. In a first embodiment, grid lines oriented perpendicularly to the anode and cathode lines are applied to a rearplate of the EPID. Alternatively, the grid lines may be deposited on an intermediate coating of SiO.sub.2 and photoresist overlying the anode and cathode lines.
Claims28
An electrophoretic display, comprising:
- a housing having at least one generally transparent faceplate, said housing capable of retaining a plurality of electrophoretic particles suspended in a solution;
- a plurality of generally parallel cathode lines disposed on said faceplate;
- a plurality of anode lines interpositioned between said cathode lines on said faceplate, wherein said anode lines lay generally parallel to said cathode lines;
- a plurality of grid lines disposed in an orientation generally perpendicular to said cathode lines and said anode lines, whereby the flow of said electrophoretic particles between said cathode lines and said anode lines is controlled by selectively applying electrical potentials to said cathode lines, anode lines and grid lines.
1 more element
A method of fabricating an EPID, comprising the steps of:
- providing a faceplate:
- forming a plurality of generally parallel cathode lines on the faceplate of said EPID;
- forming a plurality of generally parallel anode lines on the faceplate, wherein said plurality of said anode lines are generally parallel to said cathode lines and are interposed with said cathode lines on said faceplate;
- forming a plurality of grid lines generally perpendicular to said anode lines and said cathode lines, wherein said grid lines are disposed away from said faceplate;
- forming a fluid containing envelope utilizing said faceplate;
- and
- (e) filling said envelope with electrophoretic fluid.
4 more elements
Dependencies are inferred from the claim text.