Synthesis and properties of liquid crystalline materials with high optical anisotropy

Volker Reiffenrath; Ulrich Finkenzeller; Eike Poetsch; Bernhard A. Rieger; David Coates

doi:10.1117/12.19930

1 April 1990 Synthesis and properties of liquid crystalline materials with high optical anisotropy

Volker Reiffenrath, Ulrich Finkenzeller, Eike Poetsch, Bernhard A. Rieger, David Coates

Proceedings Volume 1257, Liquid Crystal Displays and Applications; (1990) https://doi.org/10.1117/12.19930
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

Abstract

Liquid crystalline materials with high optical anisotropy are of great interest for many electrooptical devices, such as STN and 2'-Mithmum Active Matrix Displays. Use of these materials leads to improved response times by using smaller cell gaps as well as enhanced contrast. As standard materials for achieving high optical anisotropy cyanobiphenyls and cyanoterphenyls are used at present. The demand for materials with lower viscosity as well as improved stability and resistivity has led us to develop new materials to meet these requirements. Introduction offluorine and fluorine containing substituents (CF3, OCF3, OCHF2) in terminal position ofhigh nstructures leads to new liquid crystals with high positive dielectiic anisotropy and good stability. Also liquid crystals with negative dielectñ anisotropy can be obtained by the incorporation of an 2,3-difluoro-l,4-phenylene moiety.

Citation Download Citation

Volker Reiffenrath, Ulrich Finkenzeller, Eike Poetsch, Bernhard A. Rieger, and David Coates "Synthesis and properties of liquid crystalline materials with high optical anisotropy", Proc. SPIE 1257, Liquid Crystal Displays and Applications, (1 April 1990); https://doi.org/10.1117/12.19930

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available