Design and Synthesis of Linear Electrooptic Effect Smectic A* Materials

线性电光效应近晶A*材料的设计与合成

• 批准号: 9260384
• 负责人: Michael Wand
• 金额: $ 5万
• 依托单位: Displaytech Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9260384&HistoricalAwards=false
• 关键词: Design; Synthesis; Linear; Electrooptic; Effect

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.

这项小型企业创新研究（SBIR）I期项目位于材料化学的一般领域和液晶子领域。 该实验活性的推力是合成新的铁电（手性）近晶晶体液晶体（FLC），该晶体将显着增强基于表面稳定的铁电液晶（SSFLC）轻阀的电流和显示器的性能。 已显示FLC显示出高速，多层电磁和显示设备应用，尤其是当掺入SSFLC轻阀时。 SSFLC设备的两个状态（数字）性质在应用程序中具有某些优势，例如被动多重平板显示器，但由于缺乏中间光学状态，因此不允许自然的灰度效应。 在手性晶状体液晶中观察到的另一种效果，即电斜效应，基于近晶A相，并提供对施加电压的线性模拟响应。 当前可用的材料受到对温度变化的敏感性的限制，因此需要温度控制。 该项目追求一种实现温度不敏感性的方法，从而大大扩大了这种效果的有用性。 新材料将既是纯手性晶状体A组件，也是包含具有较大温度范围的新组件和快速电响应响应时间的材料的混合物。 温度不敏感的电斜设备将填补需要相对温度不敏感的快速（10微秒）线性电流效应的空隙。 在这个SBIR I期项目中，DisplayTech应该证明提出的方法可以证明基于SSFLC技术的Electro-Optic和Display设备的性能的可行性，该方法是由SSFLC技术改进的。 这项研究的结果应提供有关DisplayTech的II期活动的明确指导。