摘要:
A secondary battery is comprising an organic electrolytic solution contained in a casing and, disposed therein, a positive electrode comprised of a lithium-containing composite metal oxide as a cathode active material and a negative electrode comprised of a carbonaceous material as an anode active material, wherein the positive and negative electrodes are separated through a separator disposed therebetween and wherein the organic electrolytic solution has a water content of from 5 ppm to 450 ppm.
摘要:
There is provided a honeycomb catalyst body including, a honeycomb substrate, plugging portions, and a three way catalyst. All the cells are open in the inflow side end face, the honeycomb substrate has two regions of an inflow side region and an outflow side region, the inflow side region of the honeycomb substrate is a region from the inflow side end face to a position of 10 to 90% of a length in an central axial direction of the honeycomb substrate from the inflow side end face, and 100 to 400 g/L of the three way catalyst is loaded on the partition walls in the inflow side region, no catalyst is loaded on the partition walls in the outflow side region, and a ratio of the length to a diameter of the inflow side end face of the honeycomb substrate is 1.1 to 2.0.
摘要:
A liquid crystal composition is composed of at least three types of mesomorphic compounds. The liquid crystal composition may preferably contain a mesomorphic compound having an indan skeleton represented by the formula (1) or (3) and a mesomorphic compound having a terminal cyclic group represented by the formula (2) or (4). The liquid crystal composition may also preferably further contain an optically active compound to be formulated as a chiral smectic (or ferroelectric) liquid crystal composition. When the chiral smectic liquid crystal composition is disposed between a pair of electrode substrates provided with uniaxial alignment axes, the liquid crystal composition may preferably be placed in an alignment state in C1 uniform alignment, so that a resultant liquid crystal device provides a higher contrast ratio and a wider drive voltage margin.
摘要:
A liquid crystal composition contains a mesomorphic compound represented by the following formula (A): ##STR1## wherein R.sub.1 and R.sub.2 independently denote a linear or branched alkyl group having 1-18 carbon atoms; X.sub.1 denotes a single bond, --O--, --CO--O-- or --O--CO--; and A.sub.1 denotes ##STR2## and a mesomorphic compound represented by the following formula (B): ##STR3## wherein R.sub.3 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.2 and X.sub.3 independently denote a single bond, --O--, --CO--O-- or --O--CO--; m is an integer of 3-16; and A.sub.2 denotes ##STR4## or ##STR5## The liquid crystal composition may preferably be formulated as a chiral smectic liquid crystal composition. The liquid crystal composition is useful in providing a liquid crystal device using the liquid crystal composition with a good alignment characteristic, a good drive characteristic, and a high and stable contrast ratio.
摘要:
A ferroelectric liquid crystal device comprises:a pair of substrates comprising electrodes for applying a voltage, the pair of substrates having been subjected to a uniaxial orientation treatment, and being oriented at a distance opposite to each other such that the uniaxial orientation axes cross each other at a predetermined angle; the display device further comprising a liquid crystal material disposed between the exhibiting at least two stable states and pair of substrates, the liquid crystal material having a cone angle, a pretilt angle, a tilt angle and an apparent tilt angle, wherein:the liquid crystal material having an orientation state which satisfies the conditions represented by.THETA. .THETA..sub..alpha. >.THETA./2 in which .THETA. denotes the cone angle, .alpha. denotes the pretilt angle, .delta. denotes the tilt angle and .THETA..sub..alpha. denotes the apparent tilt angle,wherein the phase of the liquid crystal changes from isotropic phase via cholesteric phase and smectic A phase to chiral smectic C phase as the liquid crystal cools from a high temperature and the liquid crystal has a temperature range in which the cholesteric phase and the smectic A phase exist at the same time.
摘要:
A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X.sub.1 and X.sub.2 respectively denote a single bond, ##STR2## Y.sub.1 denotes --CH.sub.2 O-- or --OCH.sub.2 ; and m and n are respectively 1 or 2; and at least one compound represented by the following formula (II): ##STR3## wherein R.sub.3 and R.sub.4 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, at least one of R.sub.3 and R.sub.4 being optically active; and; X.sub.3 and X.sub.4 respectively denote a single bond, ##STR4##
摘要:
A liquid crystal device, comprising: a pair of substrates, and a ferroelectric liquid crystal disposed between the substrates, each of the substrates having thereon an electrode for applying a voltage to the liquid crystal and a uniaxial alignment film provided with a uniaxial alignment axis, the alignment films on the pair of substrates being substantially parallel with each other and having an identical axis direction; wherein the ferroelectric liquid crystal is disposed in such an alignment state that the liquid crystal shows a pretilt angle .alpha., a cone angle H, an inclination angle .delta. of SmC* layer, and an apparent tilt angle .theta. a satisfying relationships of: H .theta.a>H/2; and the ferroelectric liquid crystal comprises at least three mesomorphic compounds represented by the following formula (I): ##STR1## wherein m and n are an integer of 6 to 12, said at least three mesomorphic compounds including:(a) a mesomorphic compound showing a nematic phase and no smectic C phase;(b) a mesomorphic compound showing a nematic phase and a smectic C phase; and(c) a mesomorphic compound showing a smectic C phase and no nematic phase, respectively on temperature decrease from a temperature of isotropic liquid.
摘要翻译:一种液晶装置,包括:一对基板和设置在基板之间的铁电液晶,每个基板上具有用于向液晶施加电压的电极和设置有单轴对准轴的单轴取向膜, 一对基板上的取向膜基本上彼此平行并且具有相同的轴线方向; 其特征在于,所述强电介质液晶配置成使得液晶呈现预倾角α,锥角+ E,crc / H /,SmC *层的倾斜角度Δ和满足表观倾斜角θa的取向状态 关系:+ E,crc / H /α+δ和+ E,crc / H />θa> + E,crc / H / 所述铁电液晶包含由下式(I)表示的至少三种介晶化合物:其中m和n为6〜12的整数,所述至少3种介晶化合物包括:(a) 显示向列相和没有近晶相的介晶化合物; (b)显示向列相和近晶C相的介晶化合物; 和(c)分别表现出从各向同性液体的温度降低的层状C相和无向列相的介晶化合物。
摘要:
A liquid crystal composition comprises at least one type of liquid crystal compound having the following general formula (I) and at least one type of liquid crystal compound having the following general formula (II): ##STR1## wherein R.sub.1 and R.sub.2 each is a straight-chain or branched-chain alkyl group having 1 to 18 carbon atoms. These alkyl groups may have alkoxy groups having 1 to 12 carbon atoms as substituents. Both R.sub.1 and R.sub.2 are optically inactive. Z.sub.1 is a single bond, --O--, ##STR2## wherein R.sub.3 and R.sub.4 each is a straight-chain or branched-chain alkyl group having 1 to 18 carbon atoms. Z.sub.2 and Z.sub.3 each is single bond, ##STR3## A.sub.1 is --A.sub.2 -- or --A.sub.2 --A.sub.3 --, wherein A.sub.2 and A.sub.3 are ##STR4##
摘要:
A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, R.sub.2 denotes a linear or branched alkyl group having 1-14 carbon atoms capable of having a substituent; X.sub.1 and X.sub.2 respectively denote a single bond, --O--, ##STR2## m is 0-7; and n is 0 or 1; and at least one compound represented by the following formula (II): ##STR3## wherein R.sub.3 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; R.sub.4 denotes a linear alkyl group having 1-10 carbon atoms; X.sub.3 denotes a single bond, --O--, ##STR4## Y denotes ##STR5## --CH.sub.2 O-- or --OCH.sub.2 --; and ##STR6## respectively denote ##STR7##
摘要:
A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): ##STR1## wherein, R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; R.sub.2 denotes a linear alkyl group having 1-12 carbon atoms; X.sub.1 denote a single bond, --O--, ##STR2## respectively denote ##STR3## and at least one compound represented by the following formula (II): ##STR4## wherein R.sub.3 and R.sub.4 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X.sub.2 and X.sub.3 respectively denote a single bond, --O--, ##STR5## and m and n are respectively 0, 1 or 2 with proviso that m+n is 2 or above.