Light emitting element and display device including the same
US-2025056966-A1 · Feb 13, 2025 · US
Organic light emitting display device and method of providing the same
US12563935B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12563935-B2 |
| Application number | US-202318346302-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 3, 2023 |
| Priority date | Oct 17, 2022 |
| Publication date | Feb 24, 2026 |
| Grant date | Feb 24, 2026 |
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Abstract
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An organic light emitting display device includes a first to a third pixel electrodes and a pixel defining layer disposed on a substrate, a first light emitting layer disposed on the first pixel electrode, a second light emitting layer disposed on the first to third pixel electrodes, a third light emitting layer disposed on the third pixel electrode, a thickness compensation layer disposed on the third pixel electrode, overlapping the third light emitting layer, and including Z-ITO having a ZnOx content of about 50 wt % or more, and about 90 wt % or less, and a common electrode disposed on the first to third light emitting layers.
First claim
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What is claimed is: 1 . An organic light emitting display device, the organic light emitting display device comprising: a first pixel area, a second pixel area, and a third pixel area; a first pixel electrode disposed on a substrate in the first pixel area; a second pixel electrode disposed on the substrate in the second pixel area; a third pixel electrode disposed on the substrate in the third pixel area; a pixel defining layer disposed on the substrate, and exposing upper surfaces of the first pixel electrode, the second pixel electrode and the third pixel electrode; a first light emitting layer emitting a first color light, and disposed on the first pixel electrode; a second light emitting layer emitting a second color light different from the first color light, and disposed on the first pixel electrode, the second pixel electrode and the third pixel electrode; a third light emitting layer emitting a third color light different from the first color light and the second color light, and disposed on the third pixel electrode; a thickness compensation layer disposed on the third pixel electrode, overlapping the third light emitting layer, and including Z-ITO having ZnO x content of about 50 wt % or more, and about 90 wt % or less; and a common electrode disposed on the first light emitting layer, the second light emitting layer and the third light emitting layer. 2 . The organic light emitting display device of claim 1 , wherein each of the first pixel electrode, the second pixel electrode and the third pixel electrode includes: a first transparent oxide layer disposed on the substrate; a metal layer disposed on the first transparent oxide layer; and a second transparent oxide layer disposed on the metal layer. 3 . The organic light emitting display device of claim 2 , wherein, the first transparent oxide layer includes ITO, the metal layer includes Ag, and the second transparent oxide layer includes ITO. 4 . The organic light emitting display device of claim 2 , wherein an etch selectivity of the thickness compensation layer and an etch selectivity of the second transparent oxide layer are different from each other. 5 . The organic light emitting display device of claim 4 , wherein the etch selectivity of the thickness compensation layer is greater than the etch selectivity of the second transparent oxide layer. 6 . The organic light emitting display device of claim 1 , wherein each of the first pixel electrode, the second pixel electrode and the third pixel electrode is an anode, and the common electrode is a cathode. 7 . The organic light emitting display device of claim 6 , wherein each of the first color light, the second color light and the third color light is resonated between the anode and the cathode. 8 . The organic light emitting display device of claim 1 , wherein a width of the third pixel electrode and a width of the thickness compensation layer are different from each other in a cross-sectional view. 9 . The organic light emitting display device of claim 8 , wherein the width of the third pixel electrode is greater than the width of the thickness compensation layer.
Assignees
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Classifications
Thickness · CPC title
by selective transformation of an existing layer · CPC title
Providing a shape to conductive layers, e.g. patterning or selective deposition · CPC title
Cathodes · CPC title
characterised by the geometrical arrangement of the RGB subpixels · CPC title
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- What does patent US12563935B2 cover?
- An organic light emitting display device includes a first to a third pixel electrodes and a pixel defining layer disposed on a substrate, a first light emitting layer disposed on the first pixel electrode, a second light emitting layer disposed on the first to third pixel electrodes, a third light emitting layer disposed on the third pixel electrode, a thickness compensation layer disposed on t…
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10K59/32. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 24 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).