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US 2021/0280830 A1Published application
Organic light emitting display device and method of manufacturing same
AssigneeDB HiTek Co., Ltd.
InventorsDong-Hoon PARK, Dae-Il KIM, Young-Jin KIM, Hye-Rim EUN
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Abstract
An organic light emitting display device in which a sidewall of a reflective metal layer in a blue pixel region is covered with an inorganic film and in which the reflective metal layer is thus prevented from being damaged or rendered defective when performing subsequent processes, such as etching and cleaning, for forming an anode on the reflective metal layer.
Claims18
An organic light emitting display device comprising:
- an interlayer insulation film covering an upper metal layer on a lower insulation layer;
- a first reflective metal layer in a red pixel region on the interlayer insulation film;
- a first insulation layer on the first reflective metal layer and an exposed surface of the interlayer insulation film;
- a second reflective metal layer in a green pixel region on the first insulation layer;
- a second insulation layer on the second reflective metal layer and an exposed surface of the first insulation layer;
- a third reflective metal layer in a blue pixel region on the second insulation layer;
- and
- an inorganic protective film on a sidewall of the third reflective metal layer.
5 more elements
A method of manufacturing an organic light emitting display device, the method comprising:
- depositing an interlayer insulation film on an upper metal layer in each pixel region, the upper metal layer being on a lower insulation film;
- forming a first reflective metal layer on the interlayer insulation film in a red pixel region;
- forming a first insulation layer on the first reflective metal layer and an exposed surface of the interlayer insulation film;
- forming a second reflective metal layer on the first insulation layer in a green pixel region;
- forming a second insulation layer on the second reflective metal layer and an exposed surface of the first insulation layer;
- forming a third reflective metal layer on the second insulation layer in a blue pixel region;
- and
- covering an exposed surface of the third reflective metal layer.
5 more elements
A method of manufacturing an organic light emitting display device, the method comprising:
- depositing an insulation film on an upper metal layer in each pixel region, the upper metal layer being on a lower insulation film;
- forming a first reflective metal layer in a red pixel region, a second reflective metal layer in a green pixel region, and a third reflective metal layer in a blue pixel region having different heights by forming interlayer insulation films;
- covering an upper surface of the third reflective metal layer with a protective layer that is relatively higher than the first reflective metal layer and the second reflective metal layer;
- depositing an inorganic film layer on an upper exposed surface of the interlayer insulation film, the third reflective metal layer, and the protective layer;
- and
- forming a protective film on a sidewall of the third reflective metal layer by etching the inorganic film layer.
3 more elements
A method of manufacturing an organic light emitting display device, the method comprising;
- depositing an interlayer insulation film on an upper metal layer in each pixel region, the upper metal layer being on a lower insulation film;
- forming a first reflective metal layer on the interlayer insulation film in a red pixel region;
- forming a first insulation layer on the first reflective metal layer and an exposed surface of the interlayer insulation film such that a first protrusion protrudes upward from the first reflective metal layer;
- forming a second reflective metal layer on the first insulation layer in a green pixel region;
- forming a second insulation layer on the second reflective metal layer and an exposed surface of the first insulation layer such that second protrusions protrude upward from the first protrusion and the first reflective metal layer;
- forming a third reflective metal layer on the second insulation layer in a blue pixel region;
- and
- covering an exposed surface of the third reflective metal layer.
5 more elements
Dependencies are inferred from the claim text.