Wide range room temperature ferroelectric liquid crystal mixture with microsecond order switching

Using four pyrimidine compounds as host matrix and a partially fluorinated biphenylyl as dopant a ferroelectric liquid crystal mixture has been formulated which exhibits SmC* phase over 90° from below ambient down to at least 12°C. X-ray, dielectric and electro-optic studies reveal that the mixture possess almost temperature independent high optical tilt, low driving voltage and switching speed around 100 μs, thus the mixture will be suitable for display applications.