Precise Syntheses of High Performance Color Electronic Inks Applicable to Full-Color Electronic Paper

电子可重写纸要求低成本、低重量、良好的柔韧性和低功耗，近年来在信息显示中的应用引起了极大的兴趣。显示器的制造可以以几种方式实现，例如通过使用胆甾型液晶、扭曲的白-黑球、带有液晶的可移动的细颗粒、面内电泳颗粒或微囊化的电泳颗粒。在这些不同的材料中，微胶囊电泳显示器(EPD)具有制造成本较低的优势。在本研究中，我们研究了在低介电常数介质中分散聚合制备新型高性能白色和彩色微球的方法及其粒径控制。我们还研究了聚合物包裹的二氧化钛微粒稳定分散的新方法以及微粒在碳氢化合物介质中的荷电性控制。

Electronic rewritable papers have recently attracted a great deal of interest for use in information displays, requiring low cost, low weight, good flexibility, and low power consumption. The fabrication of the displays can be achieved in several ways, such as by using cholesteric liquid crystals, twisting white-black balls, mobile fine particles with liquid crystals, in-plane electrophoretic particles, or micro-encapsulated electrophoretic particles. Among these different materials, microencapsulated electrophoretic displays (EPDs) offer an advantage of lower manufacturing cost. In this study, we have studied the preparation and particle size control of novel high performance white and color microspheres by dispersion polymerization in low dielectric constant media, such as Isopar and silicone oils. We also study new preparation methods of stable dispersions of TiO2 fine particles encapsulated with polymers and the chargeability control of the particles in the hydrocarbon media.