SBIR Phase I: Tristate and Thresholdless Antiferroelectric Liquid Crystals

这个小型企业创新研究（SBIR）项目旨在开发合适的宽温度反铁电混合物，无阈值和三态品种各至少一种，并进一步改善材料的性能，如粘度、节距和极化。提议者将合成新的潜在的反铁电化合物，并用它们来制定无阈值和三态反铁电混合物。Displaytech目前销售一种用于头戴式显示器和投影显示器的高分辨率全彩微型显示器。他们还出售一种彩色滤光片，用于与微显示器相结合，以创建投影显示器。在彩色滤光片中，必须将两个双稳态铁电液晶（FLC）显示器堆叠以提供三种所需的状态，从而提供三种颜色。在器件中使用三稳定反铁电液晶（AFLC）可能使使用单个电池来处理所有三种状态成为可能。微显示器使用flc的时间平均来提供灰度，但低于最佳数量的水平。使用无阈值的AFLC，可以显示无滞后的模拟灰度，倾斜角度大且温度不敏感，切换速度非常快，视角非常大，对比度高，LC缺陷最小，可以增加灰度级数。潜在的商业应用包括滤色器、高分辨率全彩显示器、平板显示器。

9861043 This Small Business Innovation Research (SBIR) project aims to develop suitable broad temperature antiferroelectric mixtures, at least one each of the thresholdless and tristate varieties, and to further refine material properties such as viscosity, pitch, and polarization. The proposers will synthesize new potentially antiferro-electric compounds and use them to formulate thresholdless and tristate antiferro-electric mixtures. Displaytech currently sells a high-resolution full color microdisplay for use in head mounted and projection displays. They also sell a color filter used in conjunction with the microdisplay to create the projection display. In the color filter, two bistable ferroelectric liquid crystal (FLC) displays must be stacked to give the three required states and thus provide three colors. Using a tristable antiferroelectric liquid crystal (AFLC) in the device may make it possible to use a single cell to address all three states. The microdisplay uses time averaging of FLCs to provide gray scale but at less than the optimal number of levels. Using a thresholdless AFLC, which shows analogue gray scale with no hysteresis, large and temperature insensitive tilt angle, very fast switching, very large viewing angle, high contrast ratio, and minimal LC defects could increase the number of gray scale levels. Potential commercial applications include color filters, high resolution full color displays, flat panel displays.