量子点液晶显示应用技术的进展与展望  

Technical progress and prospects of QD-LCD display

作　　者：吴显刚 季洪雷 钟海政[1] WU Xian-gang;JI Hong-lei;ZHONG Hai-zheng(School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China;R&D Center,TCL Electronics Holdings Limited,Shenzhen 518000,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]TCL电子有限公司研发中心,广东深圳518000

出　　处：《液晶与显示》2023年第3期276-290,共15页Chinese Journal of Liquid Crystals and Displays

基　　金：国家重点研发计划(No.2017YFB0404600)。

摘　　要：液晶显示是目前广泛应用的显示技术,然而常用的LED背光荧光粉的宽光谱特点限制了其色彩显示能力和总流明效率的进一步提升。量子点具有窄发射光谱和高荧光效率等优势,为提高液晶显示色彩品质和感知亮度提供了新技术路线。本文介绍了量子点液晶显示(QD-LCD)应用的结构设计和材料体系,探讨了量子点应用存在的材料稳定性、背光设计难度和制备成本等问题。针对液晶显示应用的低成本、低毒性和易集成需求,讨论了钙钛矿量子点的应用前景,特别是进一步扩展量子点适用性的解决方案,如彩膜透过率光谱交叉、偏振片的能量损失等问题。Liquid crystal display(LCD)is the most widely used display technology in our life,however there are still room to improve the color performance and energy efficiency.Quantum dots(QDs)have the advantages of narrow spectrum emission and high quantum efficiency,which play a key role in improving the color quality and perceived brightness of LCD display.This paper introduces the optical design of QD-LCD,the stability issues of QDs,as well as the challenges in backlight integration.Based on the analysis of QD-LCD’s requirements of low cost,low toxicity and easy integration,the industrial prospects of perovskite QDs are discussed.Finally,we present the future directions of QD-LCD,especially the problems of spectral cross of color filters and the energy loss of polarizer.

关 键 词：液晶显示 背光 量子点 钙钛矿量子点 彩膜 

分 类 号：TN141.9[电子电信—物理电子学] O482.31[理学—固体物理]