With the ever-growing demands for larger size and high resolution displays, Micro-light-emitting diode (Micro-LED) display with quantum dots (QDs) film as color conversion layers (CCLs) has become one of the most promising candidates of future display for its advantages in low power consumption and wide color range. In this study, we report a novel full-color display based on blue Micro LED, which has patterned red and green QDs color conversion (QDCC) layers fabricated by inkjet printing (IJP). A structure of double-layer bank was designed to reduce color deviation, prevent crosstalk, and flatten the QDCC layer. By optimizing the thickness of the red/green QDCC layers and the wavelength of blue Micro LED backlights, a full-color QDCC-LED display with 228 PPI resolution and size of 1.11-inch was successfully fabricated and showed superb performance. We not only effectively reduced crosstalk, but also improved the color conversion efficiency of QDs. In addition, this QDCC-LED display prepared by embedded bonding process shows a color gamut of 107.53% NTSC.

Graphical Abstract

中文翻译：

---

用于全彩 Micro-LED 显示器的喷墨打印量子点颜色转换层

随着对更大尺寸和高分辨率显示器的需求不断增长，以量子点（QDs）薄膜作为颜色转换层（CCLs）的微型发光二极管（Micro-LED）显示器已成为未来最有希望的候选者之一显示器以其低功耗和宽色彩范围的优势。在这项研究中，我们报告了一种基于蓝色 Micro LED 的新型全彩显示器，该显示器具有通过喷墨打印 (IJP) 制造的图案化红色和绿色 QD 颜色转换 (QDCC) 层。设计了双层bank结构，以减少颜色偏差，防止串扰，并使QDCC层变平。通过优化红绿QDCC层的厚度和蓝色Micro LED背光的波长，实现了分辨率为228 PPI、尺寸为1的全彩QDCC-LED显示屏。11寸制作成功，表现出卓越的性能。我们不仅有效地减少了串扰，还提高了量子点的颜色转换效率。此外，这款采用嵌入式键合工艺制备的QDCC-LED显示屏，色域为107.53% NTSC。

图形概要