Integrated Thin-film Transistors with MicroLED Arrays for Flexible Displays

滑铁卢大学的研究人员开发了一种新的集成技术，将薄膜晶体管（TFT）与发光二极管（LED）结合到大面积柔性基板上。该技术结合了独特的TFT电路设计和层转移工艺，以创建电气稳定的微型LED像素。该技术解决了将微型LED集成到显示器背板阵列上以及柔性电子系统中像素晶体管的电不稳定性的主要挑战。电学和光学特性表明，TFT和LED的电流-电压和电致发光特性不会受到柔性平台上的集成过程的负面影响。这种方法提供了一种潜在的方法，使灵活的和可寻址的微LED阵列的显示应用中使用的可穿戴和大面积显示应用。

Researchers at the University of Waterloo have developed a novel integration technique that combines thin-film transistors (TFTs) with light-emitting diodes (LEDs) onto large-area flexible substrates. The technology incorporates an unique TFT-circuit design and layer transfer process to create electrically stable micro-LED pixels. This technology addresses major challenges to the integration of mico-LEDs onto display backplane arrays and the electrical instability of the pixel transistors in flexible electronic systems. Electrical and optical characterization showed the current-voltage and electroluminescence characteristics of the TFTs and LEDs are not negatively affected by the integration process onto the flexible platforms. This approach provides a potential methodology for enabling flexible and addressable micro-LED arrays for display applications used in wearable and large-area display applications.