Textbook in PDF format This book delivers a focused, in-depth exploration of functional optical coatings—with a special emphasis on anti-reflective (AR) and anti-glare (AG) films—engineered to meet the performance demands of advanced electronic display systems. It presents detailed discussions on material selection, multilayer interference design, nano-textured surfaces, and thin-film deposition techniques, tailored to enhance image clarity, reduce visual noise, and improve durability across a wide range of display platforms. From flat displays to flexible formats—including foldable, stretchable, 360-degree wraparound, and conformable large-area 3D systems—this publication examines how functional coatings are adapted for next-generation display form factors. It also addresses key mechanical and environmental challenges, such as thermal cycling, surface abrasion, and mechanical deformation, offering practical strategies for coating integration and stability. Combining materials science, surface engineering, and device-level insight, this book serves as a valuable guide for researchers, engineers, and developers advancing the future of high-performance, robust display technologies