Lower module, display device including the same and method for providing the same

An electronic device including:

• a display device comprising:
• a folding region, and a non-folding region which is adjacent to the folding region along a first direction;
• a display module which displays an image;
• a window on the display module;
• a lower support plate facing the window with the display module therebetween, the lower support plate including a metal material;
• and
• an upper support plate between the display module and the lower support plate,
• wherein the upper support plate includes:
• a support layer including glass fiber and a polymer material, the support layer including:
• a first surface including a first concave-convex pattern, and
• a second surface opposite to the first surface, closer to the display module than the first surface and including a second concave-convex pattern;
• a metal layer directly on the first surface of the support layer, in the non-folding region;
• and
• the glass fiber and the polymer material of the support layer in a same plane as a portion of the metal layer.