Printed Assemblies of Inorganic Light-Emitting Diodes for Deformable and Semitransparent Displays

作者：Sang-Il Park, Yujie Xiong, Rak-Hwan Kim, Paulius Elvikis, Matthew Meitl, Dae‐Hyeong Kim, Jian Wu, Jongseung Yoon, Chang‐Jae Yu, Zhuangjian Liu, Yonggang Huang, Keh‐Chih Hwang, Placid M. Ferreira, Xiuling Li, Kent D. Choquette, John A. Rogers · 发表于：Science · 年份：2009 · DOI：10.1126/science.1175690 · 被引用次数：856 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Advanced Materials and Mechanics、Modular Robots and Swarm Intelligence

We have developed methods for creating microscale inorganic light-emitting diodes (LEDs) and for assembling and interconnecting them into unusual display and lighting systems. The LEDs use specialized epitaxial semiconductor layers that allow delineation and release of large collections of ultrathin devices. Diverse shapes are possible, with dimensions from micrometers to millimeters, in either flat or "wavy" configurations. Printing-based assembly methods can deposit these devices on substrates of glass, plastic, or rubber, in arbitrary spatial layouts and over areas that can be much larger than those of the growth wafer. The thin geometries of these LEDs enable them to be interconnected by conventional planar processing techniques. Displays, lighting elements, and related systems formed in this manner can offer interesting mechanical and optical properties.