- Compound, a liquid crystal display element and a liquid crystal composition
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PROBLEM TO BE SOLVED: To provide a compound having a lower viscosity than a conventional linear-cyclic compound and having excellent compatibility with a liquid crystal composition, and to provide a liquid crystal composition and a liquid crystal display
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Paragraph 0063; 0064; 0066
(2017/08/04)
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- COMPOUND HAVING 2-FLUOROPHENYLOXYMETHANE STRUCTURE
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The present invention relates to a compound having a 2-fluorophenyloxymethane structure and useful for organic electronic materials and medical and agricultural chemicals, particularly materials for liquid crystal display elements. A problem to be solved
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- Highly birefringent nematic liquid crystals for reflective STN applications
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An important parameter of any LCD containing portable electronic device is a low power requirement. The reflective STN display mode offers a moderate to high information content display with low power consumption. One method to realise colour in this mode is to use a large retardation (dΔn) value in the cell. For a cell gap of 6 μm, and a retardation of ～1.5, a birefringence (Δn) of greater than +0.2 is necessary. To achieve such a value in an STN LC mixture, materials with broad nematic range, good solubility and a Δn value of +0.25 are required. A study of the trans-cyclohexyldifluorophenyltolane core structure was made and a large number of dialkyl, alkenyl-alkyl and alkoxy materials were synthesised and characterised. These materials possess low to moderate melting points, broad purely nematic mesophases, a high An and very good solubility in nematic LC hosts. They are suitable materials for inclusion in mixtures for colour reflective STN displays.
- Goulding, Mark,Reiffenrath, Volker,Hirschmann, Harald
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p. 899 - 910
(2007/10/03)
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- New nematics incorporating a 2,6-difluorophenyl acetylene group
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A large series of thin film transistor compatible nematic liquid crystals incorporating a 2,6-difluorophenyl acetylene group have been synthesised. Most of them exhibit high clearing points and an increased dielectric anisotropy.
- Buchecker,Marck,Schadt
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