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 first and second base electrodes, a rib, first and second lower electrodes, first and second organic layers, and an upper electrode. A peripheral portion of each of the first base electrode and the second base electrode is covered with the rib. Each of the first base electrode and the second base electrode is formed of a first metal material. A peripheral portion of each of the first lower electrode and the second lower electrode is located on the rib. Each of the first lower electrode and the second lower electrode is formed of a second metal material different from the first metal material. A thickness of the first lower electrode is different from a thickness of the second lower electrode.
Claims15
A display device comprising:
- a substrate;
- first and second base electrodes provided above the substrate and spaced apart from each other;
- a rib which comprises a first aperture overlapping the first base electrode and a second aperture overlapping the second base electrode;
- a first lower electrode provided in the first aperture and electrically connected to the first base electrode;
- a second lower electrode provided in the second aperture and electrically connected to the second base electrode;
- a first organic layer configured to emit light which exhibits a first color and covering the first lower electrode;
- a second organic layer configured to emit light which exhibits a second color different from the first color and covering the second lower electrode;
- and
- an upper electrode provided on the first organic layer and the second organic layer, wherein
- a peripheral portion of each of the first base electrode and the second base electrode is covered with the rib,
- each of the first base electrode and the second base electrode is formed of a first metal material,
- a peripheral portion of each of the first lower electrode and the second lower electrode is located on the rib,
- each of the first lower electrode and the second lower electrode is formed of a second metal material different from the first metal material, and
- a thickness of the first lower electrode is different from a thickness of the second lower electrode.
A manufacturing method of a display device, comprising:
- forming a metal layer by depositing a first metal material above a substrate;
- forming first and second base electrodes spaced apart from each other by patterning the metal layer;
- forming a rib which comprises a first aperture overlapping the first base electrode and a second aperture overlapping the second base electrode;
- forming a first lower electrode in the first aperture by depositing a second metal material different from the first metal material via a first mask;
- forming a second lower electrode in the second aperture by depositing the second metal material via a second mask;
- forming a first organic layer which covers the first lower electrode;
- forming a second organic layer which covers the second lower electrode;
- and
- forming an upper electrode on the first organic layer and the second organic layer, wherein
- a thickness of the first lower electrode is different from a thickness of the second lower electrode.
Dependencies are inferred from the claim text.