SBIR Phase II: Low-Cost, Energy-Efficient Electronic Paper

这一小型企业创新研究计划(SBIR)第二阶段项目推进了一种新的电子纸技术，该技术可提供类似纸张的可视性能和高能效，且生产成本非常低。这项创新的核心是一种反相乳胶电泳显示(Reed)墨水，与在第一阶段研究中开发的纸状纳米多孔基质相结合。第二阶段的研究目标是：(1)开发沉积基质层的受控方法，(2)最终确定关键产品设计参数，(3)开发可扩展和高成品率的制造方法，以及(4)对先进原型进行性能评估。实现这些目标的必要任务包括开发基质沉积硬件和表征涂层质量、优化多孔基质和油墨的组合配方、定义特定的产品几何形状和功能规格、执行工艺集成和组装、与电子设备对接和优化驱动信号、进行故障模式和影响分析(FMEA)，以及确定可靠的操作条件。这项工作的预期结果是一个先进的原型显示器，满足电子货架标签(ESL)应用的性能要求，以及可扩展生产的商业可行的制造工艺序列。该项目的更广泛影响/商业潜力是开发一种核心显示技术，满足电子货架标签(ESL)所需的可读性、功率和成本要求，在价值数十亿美元的全球电子纸市场打开新的机会。该项目对社会具有重要影响，因为它可以减轻与当前薄膜显示技术相关的一些环境影响，提高电子显示器的能源效率，还可以以商业可行的方式减少纸张消耗。受这一创新影响的技术领域包括电子显示器、可打印电子产品和纳米技术。受影响的市场行业包括显示器制造业和零售业。这一创新将进一步提高对电泳性纳米液滴在薄纳米多孔介质中行为的科学技术理解。对多孔基质和纳米液滴相互作用的研究将增进科学认识，有可能在电子显示器领域以外发挥协同作用，与在生物分离和能量转换过程等其他领域遇到的相似之处。这项研究的另一个重要方面是它对教育的影响，通过让一名大学教员和一名研究生在美国一家少数族裔服务机构工作。

This Small Business Innovation Research Program (SBIR) Phase II project advances a new electronic paper technology that offers paper-like viewability and high energy-efficiency at very low production costs. Central to the innovation is a reverse-emulsion electrophoretic display (REED) ink, combined with a paper-like nano-porous matrix that was developed in Phase I research. The research objectives for Phase II are: (1) to develop a controlled method for depositing the matrix layer, (2) to finalize critical product design parameters, (3) to develop scalable and high-yield fabrication methods, and (4) to conduct performance evaluation of advanced prototypes. Necessary tasks to achieve these objectives include developing matrix deposition hardware and characterizing layer quality, optimizing the combined formulation of porous matrix and ink, defining specific product geometry and functional specifications, performing process integration and assembly, interfacing with electronics and optimizing driving signals, conducting failure modes and effects analysis (FMEA), and identifying robust operating conditions. The anticipated results of this work is an advanced prototype display that meets performance requirements for electronic shelf label (ESL) applications, as well as a commercially-viable sequence of manufacturing processes for scalable production.The broader impact/commercial potential of this project are to develop a core display technology that satisfies the readability, power, and cost requirements desired for electronic shelf labels (ESLs), opening new opportunities within the multi-billion dollar global electronic paper market. This project has important implications on society because it can mitigate some of the environmental impact associated with current thin-film display technologies, improve the energy efficiency of electronic displays, and can also lead to reduced paper consumption in a commercially viable way. Technology areas impacted by this innovation include electronic displays, printable electronics, and nanotechnology. Market sectors impacted include display manufacturing and retail. The innovation will further enhance scientific and technological understanding of the behavior of electrophoretic nano-droplets in thin nano-porous media. The enhanced scientific understanding that will be gained from the study of porous matrix and nano-droplet interactions has potential for synergies beyond the realm of electronic displays, with parallels encountered in other areas such as bioseparation and energy conversion processes. Another important aspect of this research is its impact on education, by engaging a university faculty member and a graduate student at one of the nation's minority serving institutions.