University of Rochester

Cathy A Fromen

Stephen D Jacobs

Kenneth L Marshall

Gerald Philip Cox

A PCLC flake/fluid host suspension that enables dual-frequency, reverse drive reorientation and relaxation of the PCLC flakes is composed of a fluid host that is a mixture of: 94 to 99.5 wt % of a non-aqueous fluid medium having a dielectric constant value &#x2208;, where 1&#x3c;&#x2208;&#x3c;7, a conductivity value &#x3c3;, where 10&#x3e;&#x3c3;&#x3e;10Siemens per meter (S/m), and a resistivity r, where 10&#x3e;r&#x3e;10ohm-meters (&#x3a9;-m), and which is optically transparent in a selected wavelength range &#x394;&#x3bb;; 0.0025 to 0.25 wt % of an inorganic chloride salt; 0.0475 to 4.75 wt % water; and 0.25 to 2 wt % of an anionic surfactant; and 1 to 5 wt % of PCLC flakes suspended in the fluid host mixture. Various encapsulation forms and methods are disclosed including a Basic test cell, a Microwell, a Microcube, Direct encapsulation (I), Direct encapsulation (II), and Coacervation encapsulation. Applications to display devices are disclosed.

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Raleigh, NC, United States of America

Cathy A Fromen