SBIR Phase I: Synthesis of Negative Birefringence Liquid Crystals

这个小企业创新一期项目将合成具有负双折射的材料，可用于降低LC混合物的双折射。这将允许公司制造更厚的电池，这将增加产量，并最大限度地减少由于电池厚度的微小差异而导致的显示问题。液晶的双折射通常随波长的增加而下降（称为双折射色散的特性），但在固定路径长度下，最佳双折射随波长的增加而增加。这导致了LC显示器的色度行为。我们进一步提出合成具有负双折射色散的LC材料，可以大大降低LC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分支。例如，液晶快门将不再受到如此严重的色度干扰，光学滤光片将更加色彩平衡，提供更多的自由光谱范围，偏振干涉滤光片将需要更少的级，因此更便宜，同时透射更多的光，法布里-珀罗可调滤光片可以使用液晶SLI\ i。液晶快门无色散干扰，光学滤光片色彩更平衡，光谱范围更广，有利于偏振干涉滤光片，使法布里-珀罗可调滤光片采用液晶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.