Display device and method for manufacturing display device
According to one embodiment, a display device includes a first lower electrode and a second lower electrode, a rib, a partition including a lower portion and an upper portion, a first organic layer disposed on the first lower electrode, a second organic layer disposed on the second lower electrode, a first upper electrode disposed on the first organic layer, a second upper electrode disposed on the second organic layer, a first sealing layer disposed above the first upper electrode, and a second sealing layer disposed above the second upper electrode. A thickness of the first sealing layer directly above the first lower electrode is 0.5 times or more, and less than twice a thickness of the lower portion of the partition.
1 . A display device comprising:
a substrate;
a first lower electrode and a second lower electrode disposed above the substrate;
a rib including a first aperture overlapping the first lower electrode and a second aperture overlapping the second lower electrode;
a partition including a lower portion disposed on the rib between the first aperture and the second aperture and an upper portion disposed on the lower portion and projecting from a side surface of the lower portion;
a first organic layer disposed on the first lower electrode in the first aperture and including a first light emitting layer;
a second organic layer disposed on the second lower electrode in the second aperture and including a second light emitting layer formed of a different material from the first light emitting layer;
a first upper electrode disposed on the first organic layer and in contact with the lower portion of the partition;
a second upper electrode disposed on the second organic layer and in contact with the lower portion of the partition;
a first sealing layer disposed above the first upper electrode and in contact with the lower portion of the partition;
a second sealing layer disposed above the second upper electrode, in contact with the lower portion of the partition, and separated from the first sealing layer;
a first cap layer disposed on the first upper electrode and covered by the first sealing layer; and
a second cap layer disposed on the second upper electrode and covered by the second sealing layer, wherein
a thickness of the first sealing layer directly above the first lower electrode is 0.5 times or more, and less than twice a thickness of the lower portion of the partition,
each of the first organic layer, the first upper electrode, and the first cap layer includes a first portion located below the upper portion of the partition and a second portion located on the upper portion of the partition and separated from the first portion,
the first sealing layer is in contact with the first portion and the second portion of the first cap layer,
each of the second organic layer, the second upper electrode, and the second cap layer includes a first portion located below the upper portion of the partition and a second portion located on the upper portion of the partition and separated from the first portion,
the second sealing layer is in contact with the first portion and the second portion of the second cap layer,
the second portion of the first organic layer is separated from the second portion of the second organic layer,
the second portion of the first upper electrode is separated from the second portion of the second upper electrode, and
the second portion of the first cap layer is separated from the second portion of the second cap layer.
2 . The display device of claim 1 , wherein the thickness of the first sealing layer is 0.5 μm or more, and less than 2 μm.
3 . The display device of claim 1 , wherein the first sealing layer and the second sealing layer are formed of an inorganic insulating material.
4 . The display device of claim 1 , wherein the first sealing layer and the second sealing layer are formed of silicon nitride.
5 . The display device of claim 1 , wherein each of the first sealing layer and the second sealing layer includes a closed void below the upper portion of the partition.
6 . The display device of claim 1 , wherein each of the first sealing layer and the second sealing layer is filled below the upper portion of the partition without forming a void.
7 . A display device comprising:
a substrate;
a first lower electrode and a second lower electrode disposed above the substrate and arranged in a first direction;
a rib including a first aperture overlapping the first lower electrode and a second aperture overlapping the second lower electrode;
a partition including a lower portion disposed on the rib between the first aperture and the second aperture and an upper portion disposed on the lower portion and projecting from a side surface of the lower portion;
a first organic layer disposed on the first lower electrode in the first aperture and including a first light emitting layer;
a second organic layer disposed on the second lower electrode in the second aperture and including a second light emitting layer formed of a different material from the first light emitting layer;
a first upper electrode disposed on the first organic layer and in contact with the lower portion of the partition;
a second upper electrode disposed on the second organic layer and in contact with the lower portion of the partition;
a first sealing layer
disposed above the first upper electrode,
in contact with the lower portion of the partition,
extending above the upper portion of the partition, and
including a first end portion above the upper portion of the partition; and
a second sealing layer
disposed above the second upper electrode,
in contact with the lower portion of the partition,
extending above the upper portion of the partition, and
including a second end portion above the upper portion of the partition;
wherein
a thickness of the first sealing layer directly above the first lower electrode is 0.5 times or more, and less than twice a thickness of the lower portion of the partition, and
the first end portion of the first sealing layer and the second end portion of the second sealing layer are spaced apart from each other in the first direction.
8 . The display device of claim 7 , further comprising:
a protective layer on the first sealing layer and the second sealing layer,
wherein
the first end portion of the first sealing layer and the second end portion of the second sealing layer form a first gap, and
the first gap is filled with the protective layer.
9 . The display device of claim 8 , wherein
the protective layer is in direct contact with the upper portion of the partition.
10 . The display device of claim 7 , wherein
the lower portion of the partition includes
a lower surface, and
an upper surface opposing the lower surface and being further from the substrate compared with the lower surface,
the side surface of the lower portion of the partition connects the lower surface of the lower portion of the partition to the upper surface of the lower portion of the partition,
the upper portion of the partition includes a lower surface in direct contact with the upper surface of the lower portion of the partition,
a width of the lower surface of the upper portion of the partition in the first direction is greater than a width of the upper surface of the lower portion of the partition in the first direction,
the first sealing layer is in direct contact with the side surface of the lower portion of the partition and the lower surface of the upper portion of the partition, and
the second sealing layer is in direct contact with the side surface of the lower portion of the partition and the lower surface of the upper portion of the partition.