| CPC G06F 1/1643 (2013.01) [G06F 1/1616 (2013.01)] | 23 Claims |
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1. A display device comprising:
a display panel comprising a first non-folding area, a second non-folding area, and a folding area between the first non-folding area and the second non-folding area, wherein the display device is configured to operate in a first mode in an unfolded state, and the display device is configured to operate in a second mode in a folded state; and
an insulation plate under the display panel and comprising a folding portion corresponding to the folding area,
the folding portion comprising:
a first area;
a second area further away from the first non-folding area than the first area is; and
a third area closer to the second non-folding area than the second area is, wherein each of the first area and the third area comprises a first stress control pattern comprising first grooves defined in an upper surface of the insulation plate, and the second area comprises a second stress control pattern comprising at least one of second grooves or openings defined in a lower surface of the insulation plate,
wherein the lower surface of the insulation plate defines one plane in the first non-folding area and the first area and defines one plane in the second non-folding area and the third area.
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