| CPC G02F 1/133528 (2013.01) [G02F 1/13345 (2021.01); G02F 1/133784 (2013.01); G02F 1/13439 (2013.01); G02F 1/1396 (2013.01); E06B 9/24 (2013.01); E06B 2009/2417 (2013.01)] | 12 Claims |
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1. A variable transmittance optical stack comprising:
a first polarizing plate;
a first transparent conductive layer disposed on one surface of the first polarizing plate;
a first alignment film disposed on the first transparent conductive layer;
a second polarizing plate disposed opposite to the first polarizing plate;
a second transparent conductive layer disposed on one surface of the second polarizing plate, and opposite to the first transparent conductive layer;
a second alignment film disposed on the second transparent conductive layer; and
a liquid crystal layer disposed between the first alignment film and the second alignment film,
wherein the liquid crystal layer comprises a polymer network and a liquid crystal compound, wherein the liquid crystal layer does not comprise any of a sealant or a spacer,
wherein the liquid crystal compound is arranged with uniform initial alignment,
wherein at least one transparent conductive layer of the first transparent conductive layer and the second transparent conductive layer is disposed directly contacting the first polarizing plate or the second polarizing plate without an additional substrate between the at least one transparent conductive layer and the first polarizing plate or the second polarizing plate, and
wherein the liquid crystal layer comprises a cured product of a composition for forming the liquid crystal layer, which comprises a polymerizable monomer and a liquid crystal compound,
wherein the liquid crystal compound comprises a chiral nematic liquid crystal compound, and
wherein a pitch of the chiral nematic liquid crystal compound is ranged from 5 to 20 μm.
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