Polymer stable alignment type liquid crystal composition and use thereof

摘要

Provided are a stable alignment type liquid crystal composition and use thereof. The liquid crystal composition has negative dielectric anisotropy, better stability and a large absolute value of dielectric anisotropy. The liquid crystal composition comprises a compound of general formula (I) accounting for 10%-80% of the total weight of the liquid crystal composition, a compound of general formula (II) accounting for 0.0005%-0.5% of the total weight of the liquid crystal composition, a compound of general formula (IV) accounting for 15%-90% of the total weight of the liquid crystal composition, and a polymerizable compound accounting for 0.1%-5% of the total weight of the liquid crystal composition. The liquid crystal composition is less subject to interference of such factors as radicals, oxygen, heat or the like. Also provided is the use of the liquid crystal composition in a liquid crystal display device.

主权项

1. A liquid crystal composition with negative dielectric anisotropy, comprising:
a compound of formula (I) accounting for 10%-80% of the total weight of the liquid crystal composition a compound of formula (II) accounting for 0.0005%-0.05% of the total weight of the liquid crystal composition a compound of formula (IV) accounting for 15%-90% of the total weight of the liquid crystal composition
R4—B1—Y1B2—Y2CR5  (IV); and a polymerizable compound accounting for 0.1%-5% of the total weight of the liquid crystal composition, wherein R1 and R2, which are the same or different, are each independently selected from the group consisting of C1-12 alkyl or alkoxy, C2-12 alkenyl or alkenoxy, C1-12 alkyl or alkoxy having one or more —CH2— groups independently substituted with —CH═CH—, —O—, —CH═CF—, —CF═CH—, —CF═CF—, —CO—O— or —O—CO—, and C2-12 alkenyl or alkenoxy having one or more —CH2— groups independently substituted with —CH═CH—, —O—, —CH═CF—, —CF═CH—, —CF═CF—, —CO—O— or —O—CO—, with the proviso that oxygen atoms in R1 or R2 are not directly connected to one another, R3 is a C12-16 linear, saturated alkyl, R4 and R5, which are the same or different, are each independently selected from the group consisting of C1-12 alkyl or alkoxy and C2-12 alkenyl or alkenoxy, the ring E is selected from the group consisting of 1,4-phenyl, naphthalen-2,6-diyl, 1,4-bicyclo[2,2,2]octylene, pyrimidin-2,5-diyl,1,4-phenyl having one or more H of substituted with halo, and naphthalen-2,6-diyl having one or more H of naphthalen-2,6-diyl substituted with halo,
B1 and B2, which are the same or different, are each independently selected from the group consisting of 1,4-cyclohexyl, 1,4-cyclohexenyl, piperidin-1,4-diyl, 1,4-bicyclo[2,2,2]octylene, 1,4-phenyl, pyridin-2,5-diyl, pyrimidin-2,5-diyl, naphthalen-2,6-diyl, trans-decahydronaphthalen-2,6-diyl, tetrahydronaphthalen-2,6-diyl and 1,2-indanyl, 1,4-cyclohexyl having one or two —CH2— substituted with O or S, and of 1,4-phenyl having one or more H substituted with halo, Y1 and Y2, which are the same or different, are each independently selected from the group consisting of —OCO—, —COO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CH2CH2—, —CF2CF2—, —CF2CH2—, —CF═CF—, —CH═CH—, —C≡C—, —CH(CH3)CH2—, —CH2CH(CH3)—, —(CH2)3O—, —O(CH2)3—, —COS—, —SCO—, —CH═CF—, —(CH2)4—, —C4F8—, —OCF2CF2O—, —CF2CF2CF2O—, —CH2CH2CF2O—, —CH2CF2OCH2—, —CH═CHCF2O—, —CF2OCH═CH—, —CF2OCF═CH—, —CF2OCH═CF—, —CF═CFCF2O—, —CF2OCF═CF—, —CH═CHCH2CH2—, —C2H4OCH2—, —CH2CH═CHCH2—, —OCH2CH2CH2—, —CF═CF—CF═CF—, —C≡C—CF═CF—, —C≡C—CF═CF—C≡C—, —CF═CF—C≡C—CF═CF—, —C≡C—CF2O—, and a single bond, Y2 and B2 are the same or different, j is 0, 1 or 2, a is 1 or 2, c is 0, 1 or 2, and the polymerizable compound comprises 2-4 polymerizable groups and is polymerizable by radical polymerization.