Song Jianxin, Prodanov Maksym F, Gao Yiyang, Kang Chengbin, Bhadra Debjyoti, Cheng Yuechu, Liao Zebing, Mallem Kumar, Swaminathan Vigneshwaran, Vashchenko Valerii V, Wu Xiao, Lu Xinhui, Srivastava Abhishek K
State Key Laboratory of Advanced Displays and Optoelectronics Technologies, Department of Electronics and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, 999077, China.
Centre for Display Research, Department of Electronics and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, 999077, China.
Adv Sci (Weinh). 2025 Jun;12(21):e2414316. doi: 10.1002/advs.202414316. Epub 2025 Apr 9.
In this article, color filters (CFs) emitting linearly polarized light, achieving both full-color and pixel-level precision, which can simultaneously offer high color saturation, high ambient contrast ratio (ACR), and high efficiency for modern displays, are disclosed. The quantum rods (QRs) exhibit a narrow-band polarized emission that effectively mitigates traditional challenges of color purity and light losses. Specially designed ligands on the QR surfaces allow higher load of the QR material into the polymer matrix with uniform alignment. Optimizing inkjet printing, photolithography, and photoalignment processes, a remarkable degree of polarization (DOP) of 0.65 is achieved for precisely patterned red and green QR CFs. Due to the polarized emission of unidirectionally aligned QRs, the liquid crystal display (LCD) equipped with the designed QRCF shows enhanced efficiency and ACR, highlighting advantages for their application in next-generation displays over other types of photoluminescence CFs.
在本文中，公开了一种能够发射线性偏振光的彩色滤光片（CF），其兼具全彩色和像素级精度，可为现代显示器同时提供高色彩饱和度、高环境对比度（ACR）和高效率。量子棒（QR）呈现窄带偏振发射，有效缓解了传统的色纯度和光损失问题。QR表面经过特殊设计的配体可使QR材料以均匀排列的方式更高负载量地融入聚合物基体。通过优化喷墨打印、光刻和光取向工艺，精确图案化的红色和绿色QR CF实现了0.65的显著偏振度（DOP）。由于单向排列的QR的偏振发射，配备了所设计的QR CF的液晶显示器（LCD）显示出更高的效率和ACR，凸显了其在下一代显示器应用中相对于其他类型光致发光CF的优势。
