The crease perception in flexible display

AbstractThere is a growing possibility applied to the foldable display for mobile devices because consumers want to see the big screen and they prefer mobile devices easy to carry around. However, a foldable display has crease because it generally uses laminated films or plastic substrates. In this study, we conducted the experiments in which people perceive crease on the flexible display for the various display viewing environments. The result shows that subjects most easily perceived crease in a bright room and panel off-state when the folding radius is 5 mm (5R). They perceived crease at an average height of 143 µm in that condition. The subjects perceived crease at an average height of 185.5 µm in the outdoor with display off condition. Also we analyzed that the subjects perceived the crease better when the folding radius of the flexible display was smaller than 5R. We expect that this study will contribute to the standardization of the new assessment method and to setting perception standards for the flexible display.