1990
DOI: 10.1080/02678299008033829
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Synergisms, structure-material relations and display performance of novel fluorinated alkenyl liquid crystals

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Cited by 78 publications
(9 citation statements)
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“…Compounds in which other polar regions act cooperatively with 3,4-difluoro substituted phenyl rings have also been used (see Structures [27], 28 [28], 29 and 30 [29], and 31 and 32 [30]) and these also are low viscosity, low polarity nematogens; the dielectric anisotropy value of 20.8 for compound 32 is extremely large for halogeno nematics and the value is comparable to those of cyanopyrimidines and laterally fluorinated cyano esters. Their effect on a range of other device properties has been discussed and some of these compounds are useful for high-level multiplexed TN-LCDs (Twisted Nematic -Liquid Crystal Displays) and TFT-addressed TN-LCDs.…”
Section: > C H -J > F > Hmentioning
confidence: 92%
“…Compounds in which other polar regions act cooperatively with 3,4-difluoro substituted phenyl rings have also been used (see Structures [27], 28 [28], 29 and 30 [29], and 31 and 32 [30]) and these also are low viscosity, low polarity nematogens; the dielectric anisotropy value of 20.8 for compound 32 is extremely large for halogeno nematics and the value is comparable to those of cyanopyrimidines and laterally fluorinated cyano esters. Their effect on a range of other device properties has been discussed and some of these compounds are useful for high-level multiplexed TN-LCDs (Twisted Nematic -Liquid Crystal Displays) and TFT-addressed TN-LCDs.…”
Section: > C H -J > F > Hmentioning
confidence: 92%
“…When possible, the physico-chemical properties [1][2][3][4][5][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Indeed, the replacement of the uorine atoms by other halogens in liquid crystals results in of achiral LCs having halogenated substituents will be compared with those of the corresponding compounds signi cant changes of their physico-chemical properties [1-3, 5, 9, 37-52].…”
mentioning
confidence: 99%
“…Die herausragende Eigenschaft dieser Substanzen, so weit sie in den Tabellen 2 ± 4 aufgeführt sind, ist ihre hohe dielektrische Anisotropie De. Solche Substanzen weisen häufig niedrigere Rotationsviskositäten g 1 auf und neigen eher zur Bildung einer nematischen Mesophase als ihre gesättigten Analoga [74,75]. Um den Bereich der Betriebstemperatur zu erweitern und die Doppelbrechung Dn und die dielektrische Anisotropie exakt auf die Spezifikationen einzustellen, die sich aus dem Design des Displays ergeben, setzt man oft weniger polare Verbindungen zur Feinabstimmung der Flüssigkristallmischung ein [28].…”
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