Nematic Materials for STN-LCDs

Nematic liquid crystals with a combination of a terminal cyano group and a 

Comparisons of values quoted in the literature for the physical properties of liquid crystals are often of dubious validity due to differences in the methods of assessment often carried out at different absolute temperatures (e.g. 22°C or 25°C) or reduced temperatures (e.g. T -j— 10°C or 0.95 x 7V /). The use of extrapolated data from a wide variety of nematic mixtures of different composition and properties at various concentrations is also common. Unfortunately non-ideal behaviour is common for such mixtures and non-linear behaviour is not unusual, i.e. the values extrapolated to 100% are more often than not dependent on the matrix used and the concentration of the compound to be evaluated. However, although the absolute values of the data collated in Table 3.13, measured in the same way at the same reduced temperature (0.96 X r r-/), are lower than those reported for the same compounds in the literature, usually measured at 22°C the trends and relative values are very similar. 

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Silver halide photosensitive materials for photographic purposes were the main products of FUJIFILM, and in the 1990s, future market projections did not hint any decline. Thus, silver hahde photosensitive materials were mainstream materials in our company. As a result, less than 1 % of researchers developed optical films for LCDs. Our team had developed and commercialized an optical compensation film for super twisted nematic (STN) LCDs since 1987, but we were greatly defeated by competitions that had products with better performance, but we were greatly defeated by competitors that had products with better performance. Thus, in 1992 we faced the closing down of our unit. 

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