An electronic device includes a display panel having non-folding regions arranged along a first direction and a folding region disposed between the non-folding regions. The folding region is foldable along a virtual folding axis extending along a second direction crossing the first direction. The electronic device further includes a support plate disposed on a lower portion of the display panel and having first support lines extending in the first direction, and second support lines extending in the second direction and crossing the first support lines. In the non-folding regions, the first support lines and the second support lines cross each other to define first openings, and in the folding region, the first support lines and the second support lines cross each other to define second openings. An area of each of the first openings is different from an area of each of the second openings.