GOALI: Bi-Primary Electrokinetic Displays - Electronic Paper with Color Performance Approaching Printed Media

这项NSF目标计划的目标是通过辛辛那提大学、惠普(Corvallis)和EMD/Merck Research Labs(波士顿，南安普顿)为期3年的合作努力，追求一种新的彩色电子纸。中心假设是一种新的双原色系统，使用电动像素和双颗粒油墨分散体，可以提供变革性的电子纸反射率(~76%)和色域(40%)。学术界和产业界的团队根据初步数据和之前关于最先进的电子纸技术的合作出版，提出了这一假设。智能优点有三个方面：(1)探索双色、双颗粒墨水分散体的基本电泳行为，包括了解多分散性和Zeta电位对清洁颗粒传输的影响；(2)对像素进行光学设计，以获得传统RGBW滤色器的2倍反射和2倍颜色分数；(3)通过有源矩阵寻址实现电子控制，并将改进的性能作为环境照明条件(漫射、方向等)的函数进行光学表征。更广泛的影响集中在本科生身上，他们将在辛辛那提大学接受研究合作培训，然后是在Goali合作公司的行业合作经验。就社会效益而言，电子纸的能效是普通LCD的10倍。此外，电子纸对个人的好处包括改进了电子阅读器的人体工程学(更轻、更大的屏幕、牢不可破的塑料显示屏、可卷曲/可折叠的外形)，并使社会能够进一步沉浸在电子出版和基于平板电脑的学习等日益增长的部门中。

The objective of this NSF GOALI proposal is to pursue a novel color e-Paper through a 3-year collaborative effort between the University of Cincinnati, Hewlett Packard (Corvallis), and EMD/Merck Research Labs (Boston, Southampton). The central hypothesis is that a new bi-primary color system can provide transformative e-paper reflectance (~76%) and color gamut (40%), using an electrokinetic pixel and dual-particle ink dispersions. The academic-industry team has formulated this hypothesis on the basis of preliminary data, and previous collaborative publishing on the state-of-the-art in e-Paper technology. The intellectual merit is three-fold: (1) exploring the fundamental electrophoretic behavior of dual-color, dual-particle ink dispersions, including understanding the effects of poly-dispersity and zeta-potentials for clean particle transport; (2) optically engineering pixels for 2X reflectance and 2X color-fraction of conventional RGBW color-filtering; (3) implementing electrical control by active-matrix addressing and optically characterizing the improved performance as a function of ambient lighting conditions (diffuse, directional, etc..). The broader impacts center on undergraduate students who will be trained as research co-ops at the University of Cincinnati, followed by industry co-op experience at GOALI partner companies. In terms of societal benefit, e-paper is 10X more energy efficient than a typical LCD. Furthermore, e-paper benefits to the individual include improved e-reader ergonomics (less weight, larger screen size, unbreakable plastic display, rollable/foldable form-factor), and enable further immersion of society in the growing sectors of e-publishing and tablet-based learning.