Design and Synthesis of Linear Electrooptic Effect Smectic A* Materials

小企业创新研究（SBIR）第一阶段项目 在材料化学的一般领域和 液晶 这项实验活动的主旨是 新型铁电（手性）近晶C ~* 液晶合成 （FLCs），这将显着提高电光性能 以及基于表面稳定铁电体的显示器件 液晶光阀。 FLC已被证明 显示高速、多态电光和显示装置 应用，特别是当纳入SSFLC光 阀. SSFLC器件的双态（数字）特性 在无源等应用中具有一定的优势 多路复用平板显示器，但不允许自然的 由于缺少中间光学状态而导致的灰度效应。 在手性近晶液晶中观察到的另一种效应是， 电诊所效应，是基于近晶A* 相，并提供 对施加电压的线性模拟响应。 当前可用 材料受到它们对温度敏感性的限制 变化，因此需要温度控制。 这个项目 寻求一种实现温度不敏感性的方法， 极大地扩展了这种效应的有用范围。 的 新材料将是纯手性近晶A组分， 含有新组分的材料的混合物， 温度范围和快速电光响应时间。 对温度不敏感的电诊所设备将填补这一差距 需要相对温度不敏感的快速（10 微秒）线性电光效应。 %%% 在SBIR第一阶段项目中，Displaytech应展示 所提出的提高业绩的方法的可行性 基于SSFLC技术的电光和显示器件 这是由这个小企业早期开发的。 的结果 这项研究应该提供明确的指导， 显示技术公司正在进行第二阶段的活动

This Small Business Innovation Research (SBIR) Phase I project is in the general area of materials chemistry and in the subfield of liquid crystals. The thrust of this experimental activity is the synthesis of new ferroelectric (chiral) smectic C* liquid crystals (FLCs) which will markedly enhance the performance of electrooptic and display devices based on the surface stabilized ferroelectric liquid crystal (SSFLC) light valve. FLCs have been shown to exhibit high speed, multistate electro-optic and display device applications, particularly when incorporated into the SSFLC light valve. The two state (digital) nature of the SSFLC device possesses certain advantages in applications such as passive multiplexed flat panel displays but does not allow for a natural gray-scale effect due to the lack of intermediate optical states. Another effect observed in chiral smectic liquid crystals, the electroclinic effect, is based on the smectic A* phase and affords a linear analog response to applied voltage. Currently available materials are limited by their sensitivity to temperature variation, and thus, need for temperature control. This project pursues a method to achieve temperature insensitivity, thereby greatly expanding the breadth of usefulness of this effect. The new materials will be both pure chiral smectic A components and mixtures of materials containing the new components with broad temperature ranges and fast electro-optic response times. Temperature insensitive electroclinic devices will fill the gap requiring a relatively temperature insensitive, fast (10 microseconds) linear electrooptical effect. %%% In this SBIR Phase I project, Displaytech should demonstrate the feasibility of the proposed approach to improving the performance of electro-optic and display devices based on SSFLC technology that was developed earlier by this small business. The results of this research should provide clear guidance regarding Displaytech's proceeding with a Phase II activity.