Electrophoretic display panel with arc driven individual pixels

Details Electrophoretic display panel with arc driven individual pixels Electrophoretic display panel with arc driven individual pixels

1994-09-13

1996-10-01

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

313484, 359296, 345 60, G09G 334

Patent

active

055614434

ABSTRACT:
An electrophoretic display includes a laminated triple pane construction with an electrophoretic fluid-containing envelope formed between the first and second panes and an ionizable gas-containing envelope between the second and third panes. A transparent reference electrode coats the first pane internal to the fluid envelope. A matrix of discrete pixels are disposed upon the second pane within the fluid envelope. Each pixel has a probe extending therefrom through the second pane and into the gas envelope. A plurality of row electrodes are disposed upon the second pane in the gas envelope in close proximity to corresponding rows of probes. A plurality of column electrodes disposed upon the third pane within the gas envelope perpendicular to the row lines establishes an addressable X-Y matrix. By impressing a sufficient voltage differential at selected intersections of the matrix, a local ionization of gas biases a proximate probe to the ionization potential. The probe potential is shared by the corresponding pixel, setting up an electrostatic field relative to the reference electrode for controlling the movement of pigment within the fluid. A capacitive effect is realized upon removal of ionization potential whereupon the gas deionizes leaving the pixel and probe to discharge slowly through the dielectric fluid.

REFERENCES:
patent: 5111331 (1992-05-01), Rosenberg
patent: 5349454 (1994-09-01), Iwama
patent: 5400046 (1995-03-01), Ilcisin et al.
patent: 5408245 (1995-04-01), Kakizaki

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