Display device and manufacturing method thereof
AssigneeMagnolia White Corporation
InventorKaichi Fukuda
Life of this patent
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Abstract
According to one embodiment, a display device includes a first base electrode, a rib, a partition including a conductive lower portion and an upper portion, a first lower electrode electrically connected to the first base electrode, a first organic layer, and a first upper electrode. The rib includes a first rib layer which is formed of a first inorganic insulating material and covers a peripheral portion of the first base electrode, and a second rib layer which is formed of a second inorganic insulating material different from the first inorganic insulating material and is provided between the lower portion and the first rib layer. The second rib layer protrudes from a side surface of the first rib layer and a side surface of the lower portion.
Claims20
A display device comprising:
- a substrate;
- a first base electrode formed of a first metal material and provided above the substrate;
- a rib comprising an aperture which overlaps the first base electrode;
- a partition which includes a conductive lower portion provided on the rib and an upper portion protruding from a side surface of the lower portion;
- a first lower electrode which is formed of a second metal material different from the first metal material, is spaced apart from the lower portion, is provided in the aperture and is electrically connected to the first base electrode;
- a first organic layer configured to emit light which exhibits a first color and covering the first lower electrode;
- and
- a first upper electrode which is provided on the first organic layer and is in contact with the lower portion, wherein
- the rib comprises:
- a first rib layer which is formed of a first inorganic insulating material and covers a peripheral portion of the first base electrode;
- and
- a second rib layer which is formed of a second inorganic insulating material different from the first inorganic insulating material and is provided between the lower portion and the first rib layer, and
- the second rib layer protrudes from a side surface of the first rib layer and a side surface of the lower portion.
A manufacturing method of a display device, comprising:
- forming a metal layer using a first metal material above a substrate;
- forming a first base electrode by patterning the metal layer;
- forming a first insulating layer which covers the first base electrode by a first inorganic insulating material;
- forming a second insulating layer using a second inorganic insulating material different from the first inorganic insulating material on the first insulating layer;
- forming a partition which includes a conductive lower portion located on the second insulating layer and an upper portion protruding from a side surface of the lower portion;
- forming a second rib layer which protrudes from a side surface of the lower portion by patterning the second insulating layer;
- forming an aperture which overlaps the first base electrode by removing, of the first insulating layer, a portion exposed from the second rib layer, and forming a first rib layer having a width less than the second rib layer by reducing a width of the first insulating layer;
- forming a first lower electrode electrically connected to the first base electrode by depositing a second metal material different from the first metal material;
- forming a first organic layer on the first lower electrode;
- and
- forming a first upper electrode which is located on the first organic layer and is in contact with the lower portion.
Dependencies are inferred from the claim text.