The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2012
Filed:
Jul. 21, 2010
Gerald P. Cox, Brockport, NY (US);
Cathy A. Fromen, Raleigh, NC (US);
Kenneth L. Marshall, Rochester, NY (US);
Stephen D. Jacobs, Pittsford, NY (US);
Gerald P. Cox, Brockport, NY (US);
Cathy A. Fromen, Raleigh, NC (US);
Kenneth L. Marshall, Rochester, NY (US);
Stephen D. Jacobs, Pittsford, NY (US);
University of Rochester, Rochester, NY (US);
Abstract
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 ∈, where 1<∈<7, a conductivity value σ, where 10>σ>10Siemens per meter (S/m), and a resistivity r, where 10>r>10ohm-meters (Ω-m), and which is optically transparent in a selected wavelength range Δλ; 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.