Back to results
US 12,751,138 B2Granted
OLED with a flattening layer between two barrier layers
AssigneeMagnolia White Corporation
InventorsDaisuke Kato, Kaichi Fukuda
Life of this patent
Estimating the term…
Abstract
According to one embodiment, an organic semiconductor device includes a supporting substrate, a plurality of organic EL light emitting elements, a first barrier layer, a flattening layer, and a second barrier layer. The flattening layer exists sporadically and makes gentle in inclination steep elevation change present in the surface of the first barrier layer. The first barrier layer and the second barrier layer are made of moisture penetration preventive material.
Claims20
An organic electroluminescent display device comprising:
- a substrate including a display area and a peripheral area surrounding the display area;
- a pixel in the display area, the pixel including a pixel electrode, organic layers including a light emitting layer and located in the display area, and a common electrode, the organic layers being disposed between the pixel electrode and the common electrode;
- a first inorganic insulating layer covering the pixel and disposed in both the display area and the peripheral area continuously;
- a second inorganic insulating layer disposed at an opposite side of the first inorganic insulating layer from the substrate, being in contact with the first inorganic insulating layer, and disposed in both the display area and the peripheral area continuously;
- and
- a first organic insulating layer and a second organic insulating layer that are disposed in a same layer and on the first inorganic insulating layer, and are in contact with the first and second inorganic insulating layers,
- wherein
- the pixel electrode overlaps both the first organic insulating layer and the second organic insulating layer,
- the second inorganic insulating layer covers the first and second organic insulating layers, and
- the first inorganic insulating layer is in contact with the second inorganic insulating layer in a region between the first organic insulating layer and the second organic insulating layer, the region overlapping the pixel electrode.
7 more elements
An organic electroluminescent display device comprising:
- a substrate including a display area and a peripheral area surrounding the display area;
- pixels in the display area, each of the pixels including a light emitting layer that is located in the display area;
- a first inorganic insulating layer covering the pixels and disposed in both the display area and the peripheral area continuously;
- a second inorganic insulating layer disposed at an opposite side of the first inorganic insulating layer from the substrate, being in contact with the first inorganic insulating layer, covering the pixels, and disposed in both the display area and the peripheral area continuously;
- and
- a first organic insulating layer and a second organic insulating layer that are disposed in a same layer and on the first inorganic insulating layer, and are in contact with the first and second inorganic insulating layers,
- wherein
- the pixels include a first pixel with a first pixel electrode,
- the first pixel electrode overlaps both the first organic insulating layer and the second organic insulating layer in the first pixel,
- the second inorganic insulating layer covers the first and second organic insulating layers, and
- the first inorganic insulating layer is in contact with the second inorganic insulating layer in a region between the first organic insulating layer and the second organic insulating layer, the region overlapping the first pixel electrode.
8 more elements
Dependencies are inferred from the claim text.