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:
Jun. 18, 2019
Filed:
Oct. 16, 2014
Vlyte Innovations Limited, Shannon Airport, IE;
Donal O'Keeffe, Parteen, IE;
Vlyte Innovations Limited, Shannon, IE;
Vlyte Limited, Shannon, IE;
Abstract
An electrophoretic device () comprises a first electrode () and a second electrode () spaced apart from the first electrode (). An electrophoretic cell () containing an electrophoretic ink () and one or more optically-transparent, non-planar, solid polymer elements () is located between the electrodes (). The ink () includes charged particles () of at least one type suspended in an optically-transparent suspending fluid (). The refractive indices of the solid polymer elements () and the suspending fluid () are matched to have a difference of less than 0.0075, and for half or more of the operating temperature range of the device (0° C.-70° C.), the thermo-optic coefficients (temperature coefficient of refractive index per Kelvin) of the solid polymer elements () and the suspending fluid () are matched to have an arithmetic-mean difference of less than 0.0002/K in magnitude.