SBIR Phase I: Tristate and Thresholdless Antiferroelectric Liquid Crystals

9861043 这个小企业创新研究（SBIR）项目的目的是开发合适的宽温反铁电混合物，至少有一个无阈值和三态品种，并进一步完善材料特性，如粘度，沥青和极化。提议者将合成新的潜在反铁电化合物，并使用它们来配制无阈值和三态反铁电混合物。Displaytech目前销售一种用于头戴式和投影显示器的高分辨率全色微显示器。他们还出售与微型显示器结合使用的彩色滤光片，以创建投影显示器。在滤色器中，两个双折射铁电液晶（FLC）显示器必须堆叠以给出三个所需的状态，从而提供三种颜色。在器件中使用三稳态反铁电液晶（AFLC）可以使得可以使用单个单元来寻址所有三种状态。微显示器使用FLC的时间平均来提供灰度，但小于最佳级别数。使用无阈值AFLC，其显示无滞后的模拟灰度、大且温度不敏感的倾斜角、非常快的切换、非常大的视角、高对比度和最小的LC缺陷，可以增加灰度级的数量。 潜在的商业应用包括滤色器、高分辨率全色显示器、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.