Abstract

Two series of high birefringence fluoro terphenyl compounds are investigated. A binary mixture M1, instead of each individual compound, is found to have predictable properties when mixed with other host mixtures. Doping M1 to a low birefringence thin-film transistor (TFT) mixture improves the figure of merit by 2x to 3x. Based on M1, a high birefringence and large dielectric anisotropy TFT mixture was formed and its properties evaluated.

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  1. S. T. Wu, J. D. Margerum, H. B. Meng, L. R. Dalton, C. S. Hsu, S. H. Lung, "Room-temperature diphenyl-diacetylene liquid crystals," Appl. Phys. Lett. 61, 630-632 (1992).
  2. S. T. Wu, C. S. Hsu, K. F. Shyu, "High birefringence and wide nematic range bis-tolane liquid crystals," Appl. Phys. Lett. 74, 344-346 (1999).
  3. C. Sekine, K. Fujisawa, K. Iwakura, M. Minai, "High birefringence phenylacetylene liquid crystals with low viscosity," Mol. Cryst. Liq. Cryst. 364, 711-718 (2000).
  4. L. K. M. Chan, G. W. Gray, D. Lacey, "Synthesis and evaluation of some 4,4$'$-disubstituted lateral fluoro-1,1$'$:4$'$,1$'$-terphenyls," Mol. Cryst. Liq. Cryst. 123, 185-204 (1985).
  5. L. K. M. Chan, G. W. Gray, D. Lacey, K. J. Toyne, "Synthesis and liquid crystal behaviour of further 4,4$'$-di substituted 2$'$-fluoro-1,1$'$:4$'$,1$'$-terphenyls," Mol. Cryst. Liq. Cryst. 158, 209-240 (1988).
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  14. J. Li, S. T. Wu, "Extended Cauchy equations for the refractive indices of liquid crystals," J. Appl. Phys. 95, 896-901 (2004).
  15. S. T. Wu, D. K. Yang, Reflective Liquid Crystal Displays (Wiley, 2001).

2010 (1)

S. Urban, P. Kula, A. Spadło, M. Geppi, A. Marini, "Dielectric properties of selected laterally fluoro-substituted 4,4$'$-dialkyl, dialkoxy and alkyl-alkoxy [1:1$'$;4$'$:1$'$] terphenyls," Liq. Cryst. 37, 1321-1330 (2010).

2005 (1)

C. H. Wen, S. Gauza, S. T. Wu, "High-contrast vertical alignment of lateral difluro-terphenyl liquid crystals," Appl. Phys. Lett. 87, 191909-1-191909-3 (2005).

2004 (1)

J. Li, S. T. Wu, "Extended Cauchy equations for the refractive indices of liquid crystals," J. Appl. Phys. 95, 896-901 (2004).

2002 (2)

I. K. Huh, Y. B. Kim, "Fluoro-isothiocyanated liquid crystal materials with high dielectric anisotropy and voltage holding ratio," Jpn. J. Appl. Phys. 41, 6466-6470 (2002).

I. K. Huh, Y. B. Kim, "Electro-optical properties of liquid crystal mixtures containing fluoroisothiocyanated compounds," Jpn. J. Appl. Phys. 41, 6484-6485 (2002).

2000 (1)

C. Sekine, K. Fujisawa, K. Iwakura, M. Minai, "High birefringence phenylacetylene liquid crystals with low viscosity," Mol. Cryst. Liq. Cryst. 364, 711-718 (2000).

1999 (1)

S. T. Wu, C. S. Hsu, K. F. Shyu, "High birefringence and wide nematic range bis-tolane liquid crystals," Appl. Phys. Lett. 74, 344-346 (1999).

1993 (1)

M. J. Goulding, S. Greenfield, D. Coates, R. Clemitson, "Lateral fluoro substituted 4-alkyl-4$'$-chloro-1,1$'$:4$'$,1$'$-terphenyls and derivatives. Useful high birefringence, high stability liquid crystals," Liq. Cryst. 14, 1397-1408 (1993).

1992 (1)

S. T. Wu, J. D. Margerum, H. B. Meng, L. R. Dalton, C. S. Hsu, S. H. Lung, "Room-temperature diphenyl-diacetylene liquid crystals," Appl. Phys. Lett. 61, 630-632 (1992).

1990 (1)

S. T. Wu, C. S. Wu, "Experimental confirmation of the Osipov-Terentjev theory on the viscosity of nematic liquid crystals," Phys. Rev. A 42, 2219-2227 (1990).

1988 (1)

L. K. M. Chan, G. W. Gray, D. Lacey, K. J. Toyne, "Synthesis and liquid crystal behaviour of further 4,4$'$-di substituted 2$'$-fluoro-1,1$'$:4$'$,1$'$-terphenyls," Mol. Cryst. Liq. Cryst. 158, 209-240 (1988).

1987 (1)

1985 (1)

L. K. M. Chan, G. W. Gray, D. Lacey, "Synthesis and evaluation of some 4,4$'$-disubstituted lateral fluoro-1,1$'$:4$'$,1$'$-terphenyls," Mol. Cryst. Liq. Cryst. 123, 185-204 (1985).

1984 (1)

Appl. Opt. (2)

Appl. Phys. Lett. (3)

S. T. Wu, J. D. Margerum, H. B. Meng, L. R. Dalton, C. S. Hsu, S. H. Lung, "Room-temperature diphenyl-diacetylene liquid crystals," Appl. Phys. Lett. 61, 630-632 (1992).

S. T. Wu, C. S. Hsu, K. F. Shyu, "High birefringence and wide nematic range bis-tolane liquid crystals," Appl. Phys. Lett. 74, 344-346 (1999).

C. H. Wen, S. Gauza, S. T. Wu, "High-contrast vertical alignment of lateral difluro-terphenyl liquid crystals," Appl. Phys. Lett. 87, 191909-1-191909-3 (2005).

J. Appl. Phys. (1)

J. Li, S. T. Wu, "Extended Cauchy equations for the refractive indices of liquid crystals," J. Appl. Phys. 95, 896-901 (2004).

Jpn. J. Appl. Phys. (2)

I. K. Huh, Y. B. Kim, "Fluoro-isothiocyanated liquid crystal materials with high dielectric anisotropy and voltage holding ratio," Jpn. J. Appl. Phys. 41, 6466-6470 (2002).

I. K. Huh, Y. B. Kim, "Electro-optical properties of liquid crystal mixtures containing fluoroisothiocyanated compounds," Jpn. J. Appl. Phys. 41, 6484-6485 (2002).

Liq. Cryst. (2)

S. Urban, P. Kula, A. Spadło, M. Geppi, A. Marini, "Dielectric properties of selected laterally fluoro-substituted 4,4$'$-dialkyl, dialkoxy and alkyl-alkoxy [1:1$'$;4$'$:1$'$] terphenyls," Liq. Cryst. 37, 1321-1330 (2010).

M. J. Goulding, S. Greenfield, D. Coates, R. Clemitson, "Lateral fluoro substituted 4-alkyl-4$'$-chloro-1,1$'$:4$'$,1$'$-terphenyls and derivatives. Useful high birefringence, high stability liquid crystals," Liq. Cryst. 14, 1397-1408 (1993).

Mol. Cryst. Liq. Cryst. (3)

C. Sekine, K. Fujisawa, K. Iwakura, M. Minai, "High birefringence phenylacetylene liquid crystals with low viscosity," Mol. Cryst. Liq. Cryst. 364, 711-718 (2000).

L. K. M. Chan, G. W. Gray, D. Lacey, "Synthesis and evaluation of some 4,4$'$-disubstituted lateral fluoro-1,1$'$:4$'$,1$'$-terphenyls," Mol. Cryst. Liq. Cryst. 123, 185-204 (1985).

L. K. M. Chan, G. W. Gray, D. Lacey, K. J. Toyne, "Synthesis and liquid crystal behaviour of further 4,4$'$-di substituted 2$'$-fluoro-1,1$'$:4$'$,1$'$-terphenyls," Mol. Cryst. Liq. Cryst. 158, 209-240 (1988).

Phys. Rev. A (1)

S. T. Wu, C. S. Wu, "Experimental confirmation of the Osipov-Terentjev theory on the viscosity of nematic liquid crystals," Phys. Rev. A 42, 2219-2227 (1990).

Other (1)

S. T. Wu, D. K. Yang, Reflective Liquid Crystal Displays (Wiley, 2001).

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