Display device including stretchable lower substrate
A display device according to an example embodiment of the present disclosure may include a stretchable lower substrate; a pattern layer disposed on the lower substrate and including a plurality of plate patterns and a plurality of line patterns; a plurality of connection lines disposed on each of the plurality of line patterns to connect the plurality of plate patterns adjacent to each other; an insulating layer disposed on each of the plurality of plate patterns; a plurality of light emitting elements disposed on the insulating layer and each including an anode, an organic light emitting layer and a cathode; a bank disposed on edge of the anode; and an encapsulation structure disposed on the bank and the cathode, wherein each of the plurality of plate patterns includes a first area in which the plurality of light emitting elements are disposed; a second area which surrounds the first area and in which a first protrusion pattern having an undercut shape is disposed, a third area surrounding the second area; and a fourth area which surrounds the third area and in which a second protrusion pattern having an undercut shape is disposed.
1 . A display device, comprising:
a stretchable lower substrate;
a plurality of plate patterns disposed on the stretchable lower substrate;
a plurality of connection lines disposed on the stretchable lower substrate to connect the plurality of plate patterns adjacent to each other;
an insulating layer disposed on each of the plurality of plate patterns;
a plurality of light emitting elements disposed on the insulating layer and each including an anode, an organic light emitting layer and a cathode;
a bank disposed on an edge of the anode; and
an encapsulation structure disposed on the bank and the cathode,
wherein each of the plurality of plate patterns includes,
a first area in which the plurality of light emitting elements are disposed,
a second area which is adjacent to the first area and in which a first protrusion pattern having an undercut shape is disposed,
a third area adjacent to the second area, and
a fourth area which is adjacent to the third area and in which a second protrusion pattern having an undercut shape is disposed.
2 . The display device of claim 1 , further comprising: a planarization layer disposed on the insulating layer in the first area,
wherein the plurality of light emitting elements are disposed on the planarization layer.
3 . The display device of claim 1 , wherein the organic light emitting layer is disconnected in the second area and the fourth area.
4 . The display device of claim 1 , wherein the encapsulation structure includes a first inorganic encapsulation layer, an organic encapsulation layer over the first inorganic encapsulation layer, and a second inorganic encapsulation layer over the organic encapsulation layer,
wherein in the fourth area, the encapsulation structure is disconnected.
5 . The display device of claim 4 , wherein the first protrusion pattern and the second protrusion pattern include a pillar pattern which is formed of the same material as the insulating layer and an eaves pattern which is disposed on the pillar pattern, a surface of the eaves pattern in contact with the pillar pattern being wider than an upper surface of the pillar pattern,
wherein the organic light emitting layer is disconnected by the first protrusion pattern and the second protrusion pattern.
6 . The display device of claim 5 , wherein the eaves pattern is formed of the same material as the bank.
7 . The display device of claim 5 , wherein the eaves pattern is formed of the same material as the anode.
8 . The display device of claim 5 , wherein a thickness of the pillar pattern of the second protrusion pattern is less than half of a width of a lower surface of the eaves pattern, which is not in contact with the pillar pattern.
9 . The display device of claim 5 , wherein a thickness of the pillar pattern of the second protrusion pattern is greater than a sum of thicknesses of the first inorganic encapsulation layer and the second inorganic encapsulation layer.
10 . The display device of claim 4 , wherein in the fourth area,
the first inorganic encapsulation layer is disposed on the plurality of connection lines and the second inorganic encapsulation layer is disposed on the first inorganic encapsulation layer.
11 . The display device of claim 10 , wherein an upper surface of the second inorganic encapsulation layer disposed on the plurality of connection lines is lower than a lower surface of the first inorganic encapsulation layer disposed on the plurality of plate patterns.
12 . The display device of claim 1 , further comprising: a planarization layer disposed between the insulating layer and the bank in the third area,
wherein a sum of thicknesses of the planarization layer and the bank is greater than heights of the first protrusion pattern and the second protrusion pattern.
13 . The display device of claim 1 , wherein a height of the second protrusion pattern is higher than a height of the first protrusion pattern.
14 . The display device of claim 1 , wherein the plurality of connection lines are disposed between the plurality of plate patterns and the stretchable lower substrate, and electrically connect pads disposed on adjacent plate patterns among the plurality of plate patterns.