Liquid Crystal Compound Having Lactone Ring, Liquid Crystal Composition, And Liquid Crystal Display Device
申请人:GOTO Mayumi
公开号:US20100038588A1
公开(公告)日:2010-02-18
A nematic liquid crystal compound represented by any one of formulas (a-1) to (a-6):
in formulas (a-1) to (a-6), Ra and Rb are each independently hydrogen or alkyl having 1 to 10 carbons, provided that in the alkyl, —CH2- may be replaced by —O—, —(CH2)2- may be replaced by —CH═CH—, and hydrogen may be replaced by a halogen; ring A1 and ring A2 are each independently trans-1,4-cyclohexylene or 1,4-phenylene, provided that in these rings hydrogen may be replaced by a halogen, and in the case where the ring is trans-1,4-cyclohexylene, —CH2- may be replaced by —O—, and —CH2CH— may be replaced by —CH═C—; and Z1 and Z2 are each independently a single bond, —COO—, —OCO—, —OCH2-, —CH2O— or —CH2CH2-, provided that in formula (a-3), in the case where ring A2 is trans-1,4-cyclohexylene, Z2 is a single bond, —COO—, —OCO—, —OCH2- or —CH2O—, in the case where Ra is —C3H7, Rb is —OC2H5, and Z2 is a single bond, ring A2 is trans-1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 2-fluoro-
1,4
-phenylene, 3-fluoro-1,4-phenylene, 2-fluoro-3-chloro-1,4-phenylene, 2-chloro-
3
-fluoro-3,4-phenylene or 2,3-dichloro-1,4-phenylene, and in formula (a-4), in the case where ring A1 is trans-1,4-cyclohexylene, Z1 is a single bond, —COO—, —OCO—, —OCH2- or —CH2O—.
任意一种由公式(a-1)到(a-6)中的任意一种表示的向列相液晶化合物:在公式(a-1)到(a-6)中,Ra和Rb分别独立地表示氢或具有1到10个碳的烷基,但在烷基中,—CH2-可以被—O—替换,—(CH2)2-可以被—CH═CH—替换,并且氢可以被卤素替换;环A1和环A2分别独立地表示反式1,4-环己烯基或1,4-苯基,但在这些环中氢可以被卤素替换,在环为反式1,4-环己烯基的情况下,—CH2-可以被—O—替换,—CH2CH—可以被—CH═C—替换;Z1和Z2分别独立地表示单键、—COO—、—OCO—、—OCH2-、—CH2O—或—CH2CH2-,但在公式(a-3)中,在环A2为反式1,4-环己烯基的情况下,Z2为单键、—COO—、—OCO—、—OCH2-或—CH2O—,在Ra为—C3H7,Rb为—OC2H5,Z2为单键,环A2为反式1,4-环己烯基,1,3-二氧杂环戊烷-2,5-二基,2-氟-1,4-苯基,3-氟-1,4-苯基,2-氟-3-氯-1,4-苯基,2,3-二氯-1,4-苯基,在公式(a-4)中,在环A1为反式1,4-环己烯基的情况下,Z1为单键、—COO—、—OCO—、—OCH2-或—CH2O—。