US 12,292,665 B2
Bistable liquid crystal dispersion devices comprising metal-organic mesogens and applications thereof
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)
Filed by GAUZY LTD., Tel-Aviv (IL)
Filed on Oct. 12, 2021, as Appl. No. 17/498,958.
Application 17/498,958 is a continuation in part of application No. 15/524,297, abandoned, previously published as PCT/IL2015/051069, filed on Nov. 5, 2015.
Claims priority of provisional application 62/076,002, filed on Nov. 6, 2014.
Prior Publication US 2022/0050316 A1, Feb. 17, 2022
Int. Cl. G02F 1/1333 (2006.01); C09K 19/40 (2006.01); G02F 1/13 (2006.01); G02F 1/139 (2006.01); C09K 19/04 (2006.01)
CPC G02F 1/1391 (2013.01) [C09K 19/40 (2013.01); G02F 1/1306 (2013.01); G02F 1/1323 (2013.01); G02F 1/133305 (2013.01); C09K 2019/0448 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A bistable liquid crystal film, comprising:
at least one first transparent flexible film coated with conductive material;
at least one second transparent flexible conductive film;
at least one layer of liquid crystal dispersions disposed between said at least one first transparent flexible transparent conductive film and said at least one second transparent flexible conductive film; and, an ionic dopant disposed within said at least one layer of liquid crystal dispersions;
wherein:
said bistable liquid crystal film is characterized by two modes, (i) scattering mode-A; and (ii) transparent mode-B;
switching from one mode to the other is achieved upon application of a voltage pulse, and no further application of voltage is required in order to maintain said layer of liquid crystal dispersions in either said two modes;
said ionic dopant comprises at least one ionic mesogen; and,
said at least one layer of liquid crystal dispersions comprises a eutectic mixture of smectic-A liquid crystals.