Liquid crystal composition and liquid crystal display device

Details Liquid crystal composition and liquid crystal display device Liquid crystal composition and liquid crystal display device

2007-10-05

2009-12-01

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299610, C252S299630, C252S299660, C252S299670

Reexamination Certificate

active

07625610

ABSTRACT:
A liquid crystal composition having a nematic phase that includes three components, wherein the first component is at least one compound selected from the group of compounds represented by formulas (1-1) and (1-2), the second component is at least one compound selected from the group of compounds having a group represented by formula (2), and the third component is at least one compound selected from the group of compounds represented by formulas (3-1) and (3-2):wherein R1and R4are each independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; ring A is independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, or 2,5-pyrimidine; ring B, ring C, ring D and ring F are each independently 1,4-cyclohexylene or 1,4-phenylene; ring E is 1,4-cyclohexylene, 1,4-phenylene or 3-fluoro-1,4-phenylene; Z1is a single bond, ethylene, carbonyloxy, or difluoromethyleneoxy; X1and X2are each independently hydrogen or fluorine; Y is fluorine, chlorine or trifluoromethoxy; n is 1, 2, or 3; and p is 0 or 1.

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European Search Report dated Jan. 11, 2008.

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