Method for manufacturing quantum dot light-emitting element and display device using quantum dot
US-2016293875-A1 · Oct 6, 2016 · US
Quantum dots, methods of manufacturing quantum dots and methods of manufacturing organic light emitting display devices using the same
US9911938B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9911938-B2 |
| Application number | US-201715414985-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 25, 2017 |
| Priority date | Apr 5, 2013 |
| Publication date | Mar 6, 2018 |
| Grant date | Mar 6, 2018 |
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Abstract
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In a method of manufacturing a quantum dot, a core may be formed using (utilizing) at least one cation precursor and at least one anion precursor. The core may be reacted with a shell forming precursor and a ligand forming precursor for more than one hour to form a shell enclosing the core and a ligand. A nanoparticle including the core, the shell and the ligand may be washed.
First claim
Opening claim text (preview).
What is claimed is: 1. A quantum dot comprising: a core; a first shell and a second shell enclosing the core; and a ligand on a surface of the second shell, wherein the quantum dot has a size from greater than 10 nm to about 13 nm, wherein the ligand comprises oleate and trioctylphosphine, and wherein the core comprises a reaction product of at least one cation precursor and at least one anion precursor, the cation precursor is selected from the group consisting of an element in Group XII and an element in Group XIII, and the anion precursor is selected from the group consisting of an element in Group XV and an element in Group XVI. 2. The quantum dot of claim 1 , wherein the first shell has a gradient composition and the second shell has a constant composition. 3. The quantum dot of claim 1 , wherein each of the first and the second shells comprises at least one element in Group XII and at least one element in Group XVI. 4. The quantum dot of claim 1 , wherein the ligand comprises oleate. 5. The quantum dot of claim 1 , wherein the core has a blue emission color or a green emission color.
Assignees
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Classifications
- H01L51/502Primary
Electricity · mapped topic
with zinc or cadmium · CPC title
- C09K11/565Primary
with zinc cadmium · CPC title
Electricity · mapped topic
non-luminescent particle coatings or suspension media · CPC title
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- What does patent US9911938B2 cover?
- In a method of manufacturing a quantum dot, a core may be formed using (utilizing) at least one cation precursor and at least one anion precursor. The core may be reacted with a shell forming precursor and a ligand forming precursor for more than one hour to form a shell enclosing the core and a ligand. A nanoparticle including the core, the shell and the ligand may be washed.
- Who is the assignee on this patent?
- Samsung Display Co Ltd, Industry Academia Cooperation Foundation Hongik Univ
- What technology area does this patent fall under?
- Primary CPC classification H01L51/502. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 06 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).