An overview on the principle of inkjet printing technique and its application in micro-display for augmented/virtual realities

• Published in: Opto-Electronic Advances Vol. 5; no. 6; p. 210123
• Main Authors: Yang, Xiao, Lin, Yue, Wu, Tingzhu, Yan, Zijun, Chen, Zhong, Kuo, Hao-Chung, Zhang, Rong
• Format: Journal Article
• Language: English
• Published: Institute of Future Display Technology,Xiamen University,Xiamen 361005,China%Department of Photonics&Graduate Institute of Electro-Optical Engineering,College of Electrical and Computer Engineering,Chiao Tung University,Hsinchu 30010,Taiwan,China 01.01.2022; Department of Electronic Science,Fujian Engineering Research Center for Solid-State Lighting,Xiamen University,Xiamen 361005,China; Institue of Optics and Electronics, Chinese Academy of Sciences
• Subjects: augmented reality; inkjet printing; micro-led; quantum dots; virtual reality; quantum dots; augmented reality; virtual reality; inkjet printing; micro-LED
• ISSN: 2096-4579
• DOI: 10.29026/oea.2022.210123

Augmented reality (AR) and virtual reality (VR) are two novel display technologies that are under updates. The essential feature of AR/VR is the full-color display that requires high pixel densities. To generate three-color pixels, the fluorescent color conversion layer inevitably includes green and red pixels. To fabricate such sort of display kits, inkjet printing is a promising way to position the color conversion layers. In this review article, the progress of AR/VR technologies is first re-viewed, and in succession, the state of the art of inkjet printing, as well as two key issues — the optimization of ink and the reduction of coffee-ring effects, are introduced. Finally, some potential problems associated with the color converting layer are highlighted.