SBIR Phase I: Ultra High Efficiency Top-emitting Quantum Dot light-emitting Display Incorporating Microlens Array

SBIR 第一阶段：采用微透镜阵列的超高效率顶发射量子点发光显示器

• 批准号: 1248863
• 负责人: Yixing Yang
• 金额: $ 15万
• 依托单位: NanoPhotonica
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1248863&HistoricalAwards=false
• 关键词: SBIR; Phase; Ultra; Efficiency; Top

This Small Business Innovation Research Phase I project seeks to demonstrate ultra high efficiency quantum dot light-emitting diodes (QD-LEDs) using a top-emitting structure and micro-lens array for display applications. Two key challenges will be addressed. First, a novel top-emitting structure will be explored based on the previous efficient bottom-emitting QD-LEDs. Use of top-emitting structure removes light trapped through the wave-guide mode within the glass substrate, which improves light out-coupling. A micro-lens array will be applied on top of the QD-LEDs to further enhance the light extraction. The project will focus on a number of innovative approaches. Micro-lens arrays will be fabricated using a novel stamp printing method. A small size micro-lens along with a top-emitting structure will minimize the pixel blurring effect induced by the conventional out-coupling micro-lens. Secondly, high refractive index material will be used to fabricate a micro-lens to match the refractive index of the transparent electrode, hence improving light extraction efficiency. The broader impact/commercial potential of this project lies is to enable the commercialization of QD-LED displays, solid-state lighting and other applications. QD-LEDs provide intrinsically higher color purity compared to LCD or organic light-emitting diode (OLED) technology and are suitable for display applications. However, current QD-LED solutions suffer from lower efficiency compared to LCD and OLED. The company?s innovative nanomaterials and device architecture has enabled very efficient bottom-emitting QD-LEDs with high external quantum efficiency. Additionally, the multi-layer structure in the company?s QD-LED are deposited through solution processing, which reduces the cost significantly. It is expected that a better performing and substantially less expensive QD-LED will quickly gain considerable market share in a $60B market that ships over 1.5B units a year.

这个小型企业创新研究第一阶段项目旨在展示超高效率量子点发光二极管（QD-LED），使用顶部发射结构和微透镜阵列用于显示应用。 将应对两个关键挑战。首先，我们将在现有的高效率的底发射量子点发光二极管的基础上，探索一种新型的顶发射结构。顶部发射结构的使用去除了通过玻璃基板内的波导模式捕获的光，这改善了光耦合输出。一个微透镜阵列将被应用在QD-LED的顶部，以进一步增强光提取。该项目将侧重于一些创新办法。微透镜阵列将使用一种新的邮票印刷方法制造。小尺寸的微透镜沿着与顶部发射结构一起将最小化由传统的外耦合微透镜引起的像素模糊效应。其次，高折射率材料将被用于制造微透镜以匹配透明电极的折射率，从而提高光提取效率。 该项目更广泛的影响/商业潜力在于使QD-LED显示器，固态照明和其他应用的商业化成为可能。与LCD或有机发光二极管（OLED）技术相比，QD-LED提供了本质上更高的色纯度，并且适合于显示应用。 然而，目前的QD-LED解决方案与LCD和OLED相比效率较低。公司？的创新纳米材料和器件架构使非常高效的底部发射QD-LED具有高外部量子效率。 此外，公司的多层结构？的QD-LED通过溶液处理沉积，显着降低了成本。预计性能更好且价格大幅降低的QD-LED将迅速在每年出货量超过15亿台的600亿美元市场中获得可观的市场份额。