Patent classifications
C09K2019/0462
LIQUID CRYSTAL CELL AND LIQUID CRYSTAL DISPLAY
A liquid crystal cell includes a pair of substrates, a liquid crystal layer, and a sealant. The pair of substrates includes opposing surfaces on which a photo-alignment film is provided. The liquid crystal layer is interposed between the substrates. The sealant is interposed between the substrates so as to surround the liquid crystal layer. The photo-alignment film contains a polymer having a polyamic acid as a main chain and a photo-functional group. The liquid crystal layer contains: a first liquid crystal compound having an unsaturated bond; and a second liquid crystal compound containing at least one compound selected from the group consisting of: a compound represented by a formula (I): A1-CnF2nB-A2; and a compound represented by a formula (II): A1-BCnF2n+1, where n, A1, A2 and B are as defined herein.
OPTICALLY ISOTROPIC LIQUID CRYSTAL MEDIUM AND OPTICAL DEVICE
A liquid crystal composition that contains achiral component T including at least one compound selected from the group of compounds represented by formula (1) and at least one compound selected from the group of compounds represented by formula (2), and a chiral agent to develop an optically isotropic liquid crystal phase. In formulas (1) and (2), R.sup.1 and R.sup.2 are independently alkoxyalkyl; Z.sup.11, Z.sup.12, Z.sup.21 and Z.sup.22 are independently a single bond; L.sup.11 to L.sup.13, L.sup.21 and L.sup.22 are independently fluorine; and Y.sup.1 and Y.sup.2 are independently fluorine, for example.
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