US 11,681,176 B2
Solar reflective and absorptive electrically-switchable film and glazing
Hassan-Ali Hakemi, Macherio (IT); Adrian Lofer, Kfar Saba (IL); Eyal Peso, Bat Yam (IL); and Dana Gal-Fuss, Tel Aviv (IL)
Assigned to GAUZY LTD., Tel-Aviv (IL)
Appl. No. 15/559,065
Filed by GAUZY LTD., Tel-Aviv (IL)
PCT Filed Mar. 13, 2016, PCT No. PCT/IL2016/050275
§ 371(c)(1), (2) Date Sep. 18, 2017,
PCT Pub. No. WO2016/147175, PCT Pub. Date Sep. 22, 2016.
Claims priority of provisional application 62/134,612, filed on Mar. 18, 2015.
Prior Publication US 2018/0252950 A1, Sep. 6, 2018
Int. Cl. G02F 1/1334 (2006.01); G02F 1/137 (2006.01); C09K 19/54 (2006.01); H01L 31/0216 (2014.01); H01L 31/0232 (2014.01); E06B 9/24 (2006.01)
CPC G02F 1/1334 (2013.01) [C09K 19/544 (2013.01); G02F 1/13725 (2013.01); H01L 31/02168 (2013.01); H01L 31/02327 (2013.01); C09K 2219/13 (2013.01); E06B 2009/2464 (2013.01); G02F 1/13756 (2021.01); G02F 2201/083 (2013.01); G02F 2203/11 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A solar absorbing-reflective film, comprising:
a flexible infrared (IR) reflective transparent conductive film (20) comprising a single layer of a single material;
a flexible transparent conductive film (30) comprising a single layer of a single material;
at least one layer of liquid crystal dispersion located between said flexible IR reflective transparent conductive film and said flexible transparent conductive film (10), said liquid crystal dispersion comprising metal-organic mesogen dye compositions; and,
at least one electrical contact in communication with said flexible transparent conductive film;
wherein:
said liquid crystal dispersion comprises at least one liquid crystal mixture selected from the group consisting of:
a cholesteric liquid crystal mixture characterized by broad-band wavelength reflecting capabilities;
a cholesteric liquid crystal mixture characterized by a broad-band wavelength reflecting capability characterized by a pitch in an IR region; and,
chiral nematic mixtures of liquid crystal in said liquid crystal dispersion adapted to behave as a broadband cholesteric phase; and,
said at least one liquid crystal mixture is configured to allow IR reflection of said solar absorbing-reflective film to be dynamically controlled by an amount of electric field applied.