85‐4: Tacky‐Free Stretchable Cover Window with Anti‐Scratch Property

This study presents the development of a 12‐inch, 100‐ppi activematrix micro‐LED stretchable display that demonstrates up to 45% area stretchability and stable performance over 10,000 stretching cycles at 20% uniaxial tensile strain. To achieve stretchability, the display employs a polydimethylsiloxane (PDMS)‐based stretchable substrate. However, the tacky nature of PDMS poses a significant drawback, making it challenging to effectively protect the thin and flexible panel from external environmental factors. To overcome this limitation, we developed a novel cover window with over 20% elongation capability and non‐tacky properties. This material enhances surface scratch resistance and provides robust protection against external impacts and stresses. The technological advancements presented in this study are expected to contribute significantly to improving the productization potential of nextgeneration stretchable display.