Full-color flexible laser displays based on random laser arrays

基于随机激光阵列的全色柔性激光显示

Flexible laser display is a critical component for an information output port in next-generation wearable devices.So far,the lack of appropriate display panels capable of providing sustained operation under rigorous mechanical conditions impedes the development of flexible laser displays with high reliability.Owing to the multiple scattering feedback mechanism,random lasers render high mechanical flexibility to withstand deformation,thus making them promising candidates for flexible display planes.However,the inability to obtain pixelated random laser arrays with highly ordered emissive geometries hinders the application of flexible laser displays in the wearable device.Here,for the first time,we demonstrate a mass fabrication strategy of full-color random laser arrays for flexible display panels.The feedback closed loops can be easily fulfilled in the pixels by multiple scatterings to generate durative random lasing.Due to the sustained operation of random laser,the display performance was well-maintained under mechanical deformations,and as a result,a flexible laser display panel was achieved.Our finding will provide a guidance for the development of flexible laser displays and laser illumination devices.

柔性激光显示是下一代可穿戴设备的重要组成部分.到目前为止,由于缺乏能够在机械条件下稳定工作的显示面板,柔性激光显示的发展受到了阻碍.随机激光器得益于多重反馈的工作机制可以承受机械变形,是实现柔性激光显示面板的理想选择.然而,目前缺少一种通用的制备方法将随机激光器精确排布成高度有序的像素化矩阵.为此我们提出了一种适用于柔性显示面板的全色随机激光阵列的构建策略.在构建的微激光像素中,多重散射可以提供持续的光学反馈回路,使得随机激光可以稳定出射.在机械变形下激光的性能也可以很好地保持,从而实现高性能的柔性激光显示面板.我们的构建策略将为柔性激光显示和激光照明设备的发展提供有益的参考.