Display device including a partition having a lower portion with aluminum layers
According to one embodiment, a display device manufacturing method includes forming a lower electrode, forming an insulating layer overlapping the lower electrode, forming a first aluminum layer, forming a middle layer, forming a second aluminum layer, forming a thin film, forming a partition including a lower portion including the first aluminum layer, the middle layer and the second aluminum layer and an upper portion including the thin film and protruding from a side surface of the lower portion by etching the first aluminum layer, the middle layer, the second aluminum layer and the thin film, forming an organic layer on the lower electrode, and forming an upper electrode on the organic layer and is in contact with the lower portion of the partition.
1 . A display device comprising:
a substrate;
a lower electrode provided above the substrate;
an insulating layer formed of an inorganic material and comprising an aperture overlapping the lower electrode;
a partition comprising a lower portion provided on the insulating layer and an upper portion protruding from a side surface of the lower portion;
an organic layer provided on the lower electrode, spaced apart from the lower portion of the partition, and including a light emitting layer; and
an upper electrode provided on the organic layer, wherein
the lower portion of the partition includes a first aluminum layer, and a second aluminum layer provided on the first aluminum layer,
the upper electrode is in contact with a side surface of the first aluminum layer,
each of the first aluminum layer and the second aluminum layer is formed of pure aluminum, and
a total thickness of the first aluminum layer and the second aluminum layer is greater than 500 nm.
2 . A display device comprising:
a substrate:
a lower electrode provided above the substrate;
an insulating layer formed of an inorganic material and comprising an aperture overlapping the lower electrode;
a partition comprising a lower portion provided on the insulating layer and an upper portion protruding from a side surface of the lower portion;
an organic layer provided on the lower electrode, spaced apart from the lower portion of the partition, and including a light emitting laver; and
an upper electrode provided on the organic laver, wherein
the lower portion of the partition includes a first aluminum layer, and a second aluminum layer provided on the first aluminum layer,
the upper electrode is in contact with a side surface of the first aluminum layer,
the lower portion of the partition includes a middle layer between the first aluminum layer and the second aluminum layer.
3 . The display device of claim 2 , wherein
the middle layer is formed of molybdenum or aluminum alloy.
4 . The display device of claim 2 , wherein
the middle layer is formed of aluminum oxide.
5 . The display device of claim 2 , wherein
the lower portion of the partition includes a metal layer between the insulating layer and the first aluminum layer, and
the upper electrode is in contact with a side surface of each of the metal layer and the first aluminum layer.
6 . The display device of claim 2 , wherein
the upper portion of the partition includes a thin film formed of a material different from the lower portion.