Method and apparatus for operating an electrophoretic...

Details Method and apparatus for operating an electrophoretic... Method and apparatus for operating an electrophoretic...

H - Electricity

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L

345/6

H01L 43/00 (2006.01) G02F 1/167 (2006.01) G09G 3/34 (2006.01)

Patent

CA 1106478

TITLE OF THE INVENTION: METHOD AND APPARATUS FOR OPERATING AN ELECTROPHORETIC INDICATING ELEMENT ABSTRACT OF THE DISCLOSURE A method and apparatus for operating an electrophoretic indicating element driven by a drive signal, wherein the drive signal is modulated by an alternating voltage signal superimposed on the drive signal and having a frequency sufficiently high to prevent observation thereof. The modulating signal can have either a sinusoidal, triangular, or rectangular wave shape, or can be a succession of individual wave trains wherein the duration of each wave train is selected in accordance with the composition of the electrophoretic switching element.

307475

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