Abstract
A patterned metal plate fabricated by etching process is generally employed on the bottom of a foldable display to meet mechanical properties such as rigidity and foldability. Although polyimide film has been largely applied on the top of the patterned metal plate, there have been several limitations in terms of crease and pattern protrusion as well as pattern borderline perception, impact resistance, and finger touch heterogeneity. The purpose of this study is to substitute polyimide film with a thin metal plate and assess comparative effectiveness. The result shows that it is effective in reducing crease and pattern protrusion in particular.
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