摘要:
A liquid crystal compound of (where m is an integer of 6 - 11 and n is an integer of 0 - 6) which is useful for an electric indicative element and is prepared by esterification of p-phenylphenol with acetyl chloride, allowing n-alkanoyl chloride to react the ester obtained above to obtain p-(4′-n-alkanoylphenyl)phenyl acetate, ester exchange of the acetate to obtain p-(4′-n-alkanoylphenyl)phenol and then allowing the phenol to react with optically active 4-methylhexanoic acid.
摘要:
Liquid crystal compounds represented by the formula; in which Ra means an alkyl group of 1 - 20 carbon m atoms or an alkoxy group of 1 - 20 carbon atoms; Rb means an aliphatic alkyl group, a branched alkyl group or an aralkyl group respectively of 1 - 20 carbon atoms, an alkoxy group of 1 -20 carbon atoms, or an alkanoyl methyl group having 1 - 20 carbon atoms in the alkyl; X means Y means Z means a fluorinated alkyl or a fluorinated haloalkyl; m is an integer of from 1 to 3; n is an integer of from 0 to 2 where when n is 0, Y is a single bond; and * shows an optically active center, which have a larger spontaneous polarization, high speed of response and good orientation, and show tristable liquid crystal phase.
摘要:
A compound of (wherein n is an integer from 2 to 15; R′ is m is total number of carbon atoms in R′ and is an integer from 5 to 12, and * mark shows asymmetric carbon atom) which is useful for an electric indicative element of liquid crystal is provided.
摘要翻译:的化合物(其中n为2至15的整数; R min为CHEM m为R min的总碳原子数,为5〜12的整数,*为不对称碳原子) 提供了对于液晶的电指示元件有用的。
摘要:
A liquid crystal compound of (where m is an integer of 6 - 11 and n is an integer of 0 - 6) which is useful for an electric indicative element and is prepared by esterification of p-phenylphenol with acetyl chloride, allowing n-alkanoyl chloride to react the ester obtained above to obtain p-(4′-n-alkanoylphenyl)phenyl acetate, ester exchange of the acetate to obtain p-(4′-n-alkanoylphenyl)phenol and then allowing the phenol to react with optically active 4-methylhexanoic acid.
摘要:
There is disclosed herein a ferroelectric liquid crystal electro-optical apparatus of the matrix type comprising a liquid crystal cell having first and second electrode substrates which include n striped line electrodes and m striped column electrodes, respectively, facing at right angles each other. A ferroelectric liquid crystal is put in therebetween so as to form n by m indication picture elements. Also included in the apparatus a scanning drive device adapted to supply a scanning signal and a data signal to the n striped line electrodes and the m striped column electrodes, respectively. The ferroelectric liquid crystal shows three stable states in accordance with an application voltage and has a light transmittance with a hysteresis sufficient to a dynamic drive in accordance with increase or decrease in the application voltage in a predetermined voltage range. The scanning drive device produces a first combination signal as a signal running to variation from a voltage below a reference voltage in a predetermined one polarity voltage range to a voltage above the reference voltage and produces a second combination signal as a signal which does not exceeds the reference voltage in the range, and supplies a direct-current combination signal between the electrodes after the supply of the first or second combination signal thereto.
摘要:
There is disclosed herein a ferroelectric liquid crystal electro-optical apparatus of the matrix type comprising a liquid crystal cell having first and second electrode substrates which include n striped line electrodes and m striped column electrodes, respectively, facing at right angles each other. A ferroelectric liquid crystal is put in therebetween so as to form n by m indication picture elements. Also included in the apparatus a scanning drive device adapted to supply a scanning signal and a data signal to the n striped line electrodes and the m striped column electrodes, respectively. The ferroelectric liquid crystal shows three stable states in accordance with an application voltage and has a light transmittance with a hysteresis sufficient to a dynamic drive in accordance with increase or decrease in the application voltage in a predetermined voltage range. The scanning drive device produces a first combination signal as a signal running to variation from a voltage below a reference voltage in a predetermined one polarity voltage range to a voltage above the reference voltage and produces a second combination signal as a signal which does not exceeds the reference voltage in the range, and supplies a direct-current combination signal between the electrodes after the supply of the first or second combination signal thereto.