SBIR Phase I: Synthesis of Negative Birefringence Liquid Crystals

这个小企业创新第一阶段的项目将合成具有负双折射的材料，这种材料可以用来降低LC混合物的双折射。这将使该公司能够制造更厚的电池，这将增加产量，并将由于电池厚度的微小差异而导致的显示问题降至最低。液晶的双折射一般随着波长的增加而下降(这种特性称为双折射色散)，但对于固定光程长度的最佳双折射则随着波长的增加而上升。这导致了LC显示器中的色度行为。此外，我们还提出了合成负双折射色散的液晶材料，可以用来大幅度降低液晶显示器的色度。开发具有负双折射色散的液晶有许多直接的后果。例如，液晶快门将不再遭受如此严重的色度干扰，滤光器将更加色彩平衡并提供更多的自由光谱范围，偏振干涉滤光器将需要更少的级数，因此在传输更多光的同时成本更低，法布里-珀罗可调滤光器可以用液晶SLI制造。液晶快门没有色度干扰，滤光片颜色更平衡，光谱范围更大，有利于偏振干涉滤光片，使法布里-珀罗可调谐滤光片采用液晶SLM。

This Small Business Innovation Phase I project will synthesize materials with negative birefringence which can be used to decrease the birefringence of LC mixtures. This will allow the firm to make thicker cells which will increase the yields and minimize display problems due to minor variances in cell thickness. The birefringence of liquid crystals generally falls with increasing wavelength (a property called birefringence dispersion), but the optimal birefringence for a fixed path length rises with increasing wavelength. This leads to chromatic behavior in LC displays. We furthermore propose to synthesize LC materials with negative birefringence dispersion, which can be used to greatly decrease the chromicity of LC displays. There are many immediate ramifications of developing a liquid crystal with negative birefringence dispersion. For instance, liquid crystal shutters would no longer suffer from such severe chromatic disturbances, optical filters would be much more color-balanced and provide more free spectral range, polarization interference filters would need fewer stages and hence be less expensive while transmitting more light, and Fabry-Perot tunable filters could be made using liquid crystal SLI\Is. Liquid Crystal shutters without chromatic disturbances, optical filters more color balanced and have more spectral range, benefits to polarization interference filters, make Fabry-Perot tunable filters using liquid crystal SLM's.