Reducing the thickness of quantum-dot-incorporated backlight units (QD-BLUs) is an important issue for QD-incorporated display because of various optical sheets and additional barrier films. However, critical challenges such as the aggregation and vulnerability of QDs and the need for a binder for patterning have emerged. Here, we propose a thermally stable and PL-improved microlens/QD-siloxane film (ML/QD film) by UV imprinting of a microlens array on the film surface. Compared to the neat and diffuser/QD films, the thickness of the ML/QD film decreased by 25% to realize white PL, resulting in less QD usage. The ML/QD film showed superior, long-term thermal and moisture stability and a wide color gamut (109% related to NTSC). A glass-fabric reinforced siloxane hybrid (GFRH) film with a high haze value of 92% was fabricated by the refractive index contrast of methacrylate oligo-siloxane resin with glass-fabric. Hazy GFRH (H-GFRH) exhibited a uniform diffusion of light (diffuser sheet) as well as outstanding thermomechanical properties (polymer substrate). The synergetic advantages of the ML/QD film on H-GFRH substrate will be beneficial for the large-scale and thin white QD-BLUs in display applications.

中文翻译：

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长期稳定的微透镜阵列集成的量子点/硅氧烷薄膜，用于薄型白色背光单元

由于各种光学片和附加的阻挡膜，减少结合量子点的背光单元（QD-BLU）的厚度对于结合QD的显示器来说是一个重要的问题。但是，已经出现了诸如QD的聚合和易损性以及对用于图案形成的粘合剂的需求之类的严峻挑战。在这里，我们通过在膜表面上微透镜阵列的紫外线压印，提出了一种热稳定且经PL改进的微透镜/ QD-硅氧烷膜（ML / QD膜）。与纯净/扩散/ QD膜相比，ML / QD膜的厚度减少了25％，可实现白色PL，从而减少了QD的使用。ML / QD膜显示出优异的长期热稳定性和湿气稳定性，并具有宽色域（与NTSC有关为109％）。通过甲基丙烯酸酯低聚硅氧烷树脂与玻璃纤维织物的折射率对比，制备了雾度值为92％的玻璃纤维增​​强硅氧烷杂化膜（GFRH）。朦胧的GFRH（H-GFRH）表现出均匀的光扩散（扩散片）以及出色的热机械性能（聚合物基材）。H-GFRH基板上ML / QD膜的协同优势将有利于显示应用中的大型薄白QD-BLU。