Optical Adhesives and Screen Sealants for Foldable Displays: Analysis, Progress and Trends
Yuxin Du, Yifei Li, Cong Li, Ran Xu, Linghui Meng, Yongping Bai
Abstract
The realm of flexible display devices, particularly centered around folding screen smartphones, is undergoing rapid advancements. As integral components, optical adhesives and screen sealants for these devices play pivotal roles in determining their overall performance. This paper provides a comprehensive overview of the evolution of display technology and display screens, delving into the critical function of optical adhesives within this framework. Notably, light-curing adhesives stand out for their paramount importance in display screen manufacturing, attributed to their swift curing capabilities. We synthesize the key research achievements and concomitant limitations pertaining to the characteristics of diverse flexible optical adhesives compositions over recent years. Furthermore, we delve into the influence of chemical modification techniques applied to various adhesive systems and the integration of physical doping fillers on enhancing the performance of screen sealants.