US Patent 11610520 Foldable display apparatus

A foldable display apparatus includes a display panel including a flexible substrate, in which at least one folding area folded based on a folding axis and non-folding areas disposed at one side and the other side of the folding area are defined, a glass substrate disposed below the flexible substrate, including an opening portion corresponding to the folding area, and a pattern frame disposed below the glass substrate, wherein the flexible substrate includes at least one groove pattern formed to overlap the folding area, and the groove pattern is formed on a rear surface of the flexible substrate.