Flexible displays - Mechanical test methods. Crease and waviness measurement methods for foldable displays

This standard specifies a standardized procedure for evaluating the mechanical performance of flexible display panels, with a particular focus on quantifying visual imperfections arising from folding mechanisms. The outlined methodology provides a systematic approach to measure the depth and profile of creases formed during repeated folding cycles, as well as assessing surface undulations or wave-like distortions that may occur on the display substrate. By employing defined optical measurement techniques and controlled bending fixtures, the procedure ensures consistent and reproducible data regarding the physical deformation characteristics of foldable screens. The scope of the test is designed to support manufacturers and suppliers in verifying product durability and optical quality against established mechanical stress parameters. This protocol facilitates the comparison of different display architectures and materials by offering a unified framework for assessing fold-related defects. The implementation of these measurement guidelines aids in the development of more robust flexible electronic devices by highlighting areas where mechanical stress induces visible surface irregularities that could impact user experience.