Patent ID: 8964161
Filing Date: 2015-02-24
Classification: G02F

Abstract:
1. An electro-optical device for controlling color, comprising: a cell of the polymer-stabilized blue phase (PSBP) liquid crystal including two substrates and a blue phase liquid crystal disposed between the substrates; an electrical field generator for generating an applied electric field on the blue phase liquid crystal, wherein the generator includes two electrodes separated by a gap between the substrates for applying the electric field in a transverse plane between the substrates; a polymer network within the cell of PSBP liquid crystal which stabilizes the blue phase liquid crystal in a cubic lattice structure oriented to reflect or transmit an incident electromagnetic radiation into a second electromagnetic radiation having a wavelength in the visible light spectrum through birefringence induced by the electric field applied between the substrates; and wherein at least one of the peak wavelength and the intensity of the second electromagnetic radiation is controllable by altering at least one of frequency, amplitude, wave form, and pulse width of the applied electrical field.