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:
Feb. 20, 2017
Filed:
May. 15, 2014
Jason C. Heikenfeld, Cincinnati, OH (US);
Russell Schwartz, Cincinnati, OH (US);
Lisa Clapp, Cincinnati, OH (US);
April Milarcik, Cincinnati, OH (US);
Stanislav G. Vilner, South Lebanon, OH (US);
Jason C. Heikenfeld, Cincinnati, OH (US);
Russell Schwartz, Cincinnati, OH (US);
Lisa Clapp, Cincinnati, OH (US);
April Milarcik, Cincinnati, OH (US);
Stanislav G. Vilner, South Lebanon, OH (US);
Sun Chemical Corporation, Parsippany, NJ (US);
Abstract
Colored fluids for electrowetting, electro fluidic, or electrophoretic devices, and the devices themselves, are disclosed. The colored fluid can include a nonaqueous polar solvent having (a) a dynamic viscosity of 0.1 cP to 50 cP at 250 C, (b) a surface tension of 25 dynes/cm to 55 dynes/cm at 250 C, and (c) an electrowetting relative response of 40% to 80%. Such colored fluids further include a colorant selected from a pigment and/or a dye. In another embodiment, the colored fluid can include a non-polar solvent and an organic colorant selected from a pigment and/or a dye. Such colored fluids can be black in color and have a conductivity from 0 pS/cm to 5 pS/cm and a dielectric constant less than 3. The use of the colored fluids offers improvements in reliability, higher levels of chroma in the dispersed state, and the ability to achieve higher contrast ratios in display technologies.