Support plate having a folding portion with variable opening density for display device

An electronic device comprising a display device for providing an image, the display device comprising:

• a display panel;
• and
• a support plate under the display panel, and comprising a first non-folding portion, a folding portion, and a second non-folding portion, which are located along a first direction so that the folding portion is between the first and second non-folding portions,
• wherein the folding portion comprises:
• a plurality of first branches located between openings that are adjacent to each other in the first direction from among openings defined through the folding portion;
• and
• a plurality of second branches located between openings adjacent to each other in a second direction crossing the first direction from among the openings defined through the folding portion,
• wherein the folding portion is configured to be folded with respect to a folding axis parallel to the second direction,
• wherein a length in the second direction of each of the openings is greater than a length in the first direction of each of the openings,
• wherein, in a plan view, an area ratio of the openings extending longer in the second direction to the first and second branches increases starting from a center of the folding portion to the first and second non-folding portions,
• wherein an area between the folding axis and one side of the folding portion comprises:
• a central part adjacent to the folding axis;
• a second part adjacent to the one side of the folding portion;
• and
• a first part between the central part and the second part,
• wherein in each of the central part, the first part, and the second part, the openings have a same size and are located in at least two rows corresponding to the second direction, and
• wherein the area ratio of the openings is greater in the first part than in the central part, and greater in the second part than in the first part.