Traveling wave dielectrophoretic displays
AssigneeHewlett-Packard Development Company, L.P.
InventorsGary Gibson, Jun Zeng
Life of this patent
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Abstract
A traveling wave dielectrophoresis display includes a display cell and a plurality of first particles contained within the display cell, the plurality of first particles having a first color. A plurality of electrodes in proximity to the display cell and generate a traveling wave dielectrophoresis field which distributes the plurality of first particles within the display cell to alter its optical characteristics.
Claims15
A traveling wave dielectrophoretic display comprising:
- a display cell;
- a plurality of first particles contained within the display cell, the plurality of first particles having a first color;
- a plurality of electrodes in proximity to the display cell;
- and
- a traveling rave dielectrophoresis field generated by the plurality of electrodes at a first driving frequency, the traveling wave dielectrophoresis field distributing the plurality of first particles within the display cell to alter the optical characteristics of the display cell.
The display of claim in which the first particles and second particles are electrically neutral.
A full color reflective display comprising:
- a cell;
- a fluid medium contained within the cell;
- colorant particles movably disposed within the fluid medium;
- an electrode array in proximity to the cell;
- and
- a dielectrophoretic field generated by application of an electrical waveform to the electrode array, the colorant particles exhibiting a response to the dielectrophoretic field;
- in which motion of colorant particles within the fluid medium is independently controlled by altering the frequency of the dielectrophoretic field.
A method for displaying color in a traveling wave dielectrophoresis display, the method comprising:
- selecting a color to be displayed within a cell of the display, the cell containing a particulate colorant;
- selecting a traveling wave dielectrophoretic field which translates the particulate colorant within the cell using a force generated by the imaginary component of the Clausius-Mossotti factor;
- and
- activating an electrode array to create the traveling wave dielectrophoretic field to translate the particulate colorant within the cell such that the reflective properties of the cell are altered to display the selected color.
Dependencies are inferred from the claim text.