Compound having a five-membered ring, the liquid crystal composition and the liquid crystal display device
AssigneesJnc Corporation, Jnc Petrochemical Corporation
InventorsTokifumi Masukawa, Yasuyuki Goto, Tomohiro Yano
Life of this patent
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Abstract
The invention provides a liquid crystal compound that has an excellent compatibility with other liquid crystal compounds and also has at least one of characteristics such as a high stability to heat, light or the like, a suitable refractive index anisotropy (Δn), a low threshold voltage and a suitable dielectric anisotropy (Δ∈). A compound represented by formula (1) For example, R1 is alkyl having 1 to 10 carbons, R2 is halogen or alkenyl having 2 to 10 carbons; the ring A1, the ring A2 and the ring A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2 and Z3 are a single bond or alkylene having 1 to 4 carbons; G is —CH2— or —O—; and m is 1, and n and p is 0 or 1.
Claims15
A compound represented by formula (1):
- wherein
- R1 and R2 are alkyl having 1 to 10 carbons, and in the alkyl, arbitrary —CH2— may be replaced by —O— and arbitrary —(CH2)2— may be replaced by —CH═CH—;
- the ring A1, the ring A2 and the ring A3 are each independently 1,4-cyclohexylene or 1,4-phenylene, and in these rings, arbitrary hydrogen may be replaced by halogen, and at least one of the ring A1, the ring A2 and the ring A3 is 2,3-difluoro-1,4-phenylene;
- Z1, Z2 and Z3 are each independently a single bond or alkylene having 1 to 4 carbons, and in the alkylene, arbitrary —CH2— may be replaced by —O— or —CO— and arbitrary —(CH2)2— may be replaced by —CH═CH—, and in these groups, arbitrary hydrogen may be replaced by halogen;
- G is —CH;
- and
- m, n and p are each independently 0 or 1, and the sum of m, n and p is 1, 2 or 3.
Dependencies are inferred from the claim text.