US 2016/0097236 A1 · PHOTOREACTIVE SMART WINDOW

Abstract

Provided is a photoreactive smart window. The photoreactive smart window includes a liquid crystal layer of which light transmittance changes according to the presence of ultraviolet (UV) light and which is combined with a solar cell. The photoreactive smart window is in a transparent condition in the daytime when UV light is generated from the sun, and accordingly sunlight passing therethrough is converted into electric energy. Also, the photoreactive smart window is in an opaque condition in the evening and at night when no UV light is generated from the sun, and accordingly no curtains are necessary on the windows.

Claims13

Dependent claims

A photoreactive smart window comprising:

an upper polarizer and a lower polarizer that are arranged at a separation distance from each other;
a liquid crystal layer between the upper polarizer and the lower polarizer and comprising an achiral nematic liquid crystal, a photoreactive azobenzene compound, and a chiral dopant;
and
a solar cell disposed on a top surface of the upper polarizer, on a bottom surface of the lower polarizer, between the upper polarizer and the liquid crystal layer, or between the lower polarizer and the liquid crystal layer.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/842,029Filed 1 Sep 2015

Priority

KR 10-2014-01324901 Oct 2014

Published

7 Apr 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

E06B 9/24
Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction:…
G02F 1/0045
Materials therefor: liquid crystals characterised by their physical properties
H01G 9/2068
Light-sensitive devices: panels or arrays of photoelectrochemical cells, e.g. photovoltaic modules based on photoelectrochemical cells
E06B 2009/2476
Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat…

Photoreactive smart window

Life of this patent

Photoreactive smart window

Life of this patent

Abstract

Claims13