ELECTRICALLY CONTROLLABLE VARIABLE COLOR DEVICE

Carmel Rotschild (Inventor), Moran Bercovici (Inventor), Karni Wolowelsky (Inventor)

Research output: Patent

Abstract

A cell containing a dispersion of an electrically-charged radiation- affecting (ECRA) component within a fluid has at least one surface that is transparent to electromagnetic radiation of at least one wavelength. The ECRA component imparts to the cell a first predefined optical property. An electrode arrangement, associated with the cell so as to interface with the dispersion, is reversibly electrically actuatable between a first state in which the electrode arrangement attracts the ECRA component so as to at least partially remove the ECRA component from the dispersion, thereby modifying the optical property of the cell, and a second state in which the electrode arrangement releases the ECRA component back into the dispersion, thereby restoring the predefined optical property. Certain embodiments employ pairs of dyes with large ratios of absorption cross-section or which undergo FRET.

Original languageAmerican English
Patent numberWO2017009855
IPCG02F 1/ 01 A I
Priority date16/07/15
StatePublished - 19 Jan 2017

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