Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-29T07:48:39.884Z Has data issue: false hasContentIssue false
  • English
  • Français

Uv Curable Liquid Crystals and Their Application

Published online by Cambridge University Press:  10 February 2011

H. Takatsu  and
H. Hasebe
H. Takatsu
Affiliation:
Dainippon Ink & Chemicals, Inc., Ina-machi, Kitaadachi-gun, Saitama 362, Japan
H. Hasebe
Affiliation:
Dainippon Ink & Chemicals, Inc., Ina-machi, Kitaadachi-gun, Saitama 362, Japan
Get access

Abstract

Some classes of liquid crystalline monoacrylates having no methylene spacers in a side chain have been prepared. The liquid crystalline monoacrylates have effects to reduce the driving voltage and the hysteresis for a light scattering display of Polymer Network liquid crystals prepared by photo-polymerization-induced phase separation.

By photo-polymerization of a chiral monoacrylate monomer in a nematic liquid crystalline host including a black dichroic dye, a polarizer free reflective Spiral Polymer Aligned Nematic (SPAN) Guest Host (GH) LCD exhibiting a low driving voltage has been fabricated. The effect of the spiral polymers made of some kinds of chiral monoacrylates for a Super Twisted Nematic (STN) LCD using SPAN liquid crystals is discussed.

UV-curable liquid crystals showing nematic phases at room temperature have been developed. By in situ photo-polymerization, the UV-curable liquid crystals can be utilized for the retardation film with high quality and good thermal stability. The fabrication of various kinds of retardation film using the UV-curable liquid crystals is discussed.

UV-curable liquid crystals having isotropic-nematic-smectic A phase sequence have been developed and the photo-polymerization at the state of their uniaxially oriented smectic A phases at room temperature is discussed. The polymerized film is optically uniaxial and transparent without light scattering.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 425: Symposium I – Liquid Crystals for Advanced Technologies , 1996 , 293
Copyright
Copyright © Materials Research Society 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Fergason, J. L., SID Dig. Tech. Paper, 16, 68 (1985).Google Scholar
2. Drzaic, P. S., J. Appl. Phys., 60, 2142 (1986).Google Scholar
3. Doane, J. W., Vaz, N. A.., Wu, B. -G. and Zumer, S., Appl. Phys. Lett., 48, 269(1986).Google Scholar
4. Drzaic, P. S., Liq. Cryst., 3, 1543 (1988).Google Scholar
5. Fujisawa, T., Ogawa, H. and Maruyama, K., 1989 Japan Display, 690 (1989).Google Scholar
6. Hasebe, H.., Takatsu, H., Limura, Y. and Kobayashi, S., Jpn. J. Appl. Phy., 33, 6245 (1994).Google Scholar
7. Broer, D. J., Finkelmann, H. and Kondo, K., Makromol. Chem., 189, 185 (1986).Google Scholar
8. Broer, D. J., Mol, G. N. and Challa, G., Makromol. Chem., 190, 19 (1989).Google Scholar
9. Broer, D. J., Boven, J. Mol, G. N., and Challa, G., Makromol. Chem., 190, 2255 (1989).Google Scholar
10. Broer, D. J., Hikmet, R. A. M. and Challa, G., Makromol Chem., 190, 3201 (1989).Google Scholar
11. Broer, D. J., Mol, G. N. and Challa, G., Makromol. Chem., 192, 59 (1989).Google Scholar
12. Broer, D. J., Lub, J. and Mol, G. N., Macromolecules, 26, 1244 (1993).Google Scholar
13. Dubois, J. C., Lavenu, J. C. and Zann, A., ACS Symp. Ser., 74, 86 (1978).Google Scholar