Quantum dots with salt ligands with charge transporting properties
US-2020259110-A1 · Aug 13, 2020 · US
Quantum dots, display apparatus including the same, and method for manufacturing the display apparatus
US12501763B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12501763-B2 |
| Application number | US-202017767723-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 22, 2020 |
| Priority date | Oct 8, 2019 |
| Publication date | Dec 16, 2025 |
| Grant date | Dec 16, 2025 |
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- Title
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Abstract
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The quantum dot comprises a ligand which is a copolymer comprising a first repeating unit comprising at least one or more hole transporting functional groups and a second repeating unit comprising at least one or more photocrosslinking functional groups.
First claim
Opening claim text (preview).
What is claimed is: 1 . A quantum dot, comprising: a ligand which is a copolymer comprising a first repeating unit comprising at least one or more hole transporting functional groups; and a second repeating unit comprising at least one or more photocrosslinkable functional groups, wherein the copolymer has a number average molecular weight of 100 to 50,000. 2 . The quantum dot of claim 1 , wherein the at least one or more hole transporting functional groups of the first repeating unit comprise at least one or more among an indolyl group, a carbazolyl group, a benzofuranyl group, a dibenzofuranyl group, a benzothiophenyl group, a dibenzothiophenyl group, or an amino group. 3 . The quantum dot of claim 1 , wherein the first repeating unit has a structure in which a first monomer is polymerized, and the first monomer comprises at least one of N-vinylcarbazole, triphenylamine, 4-butylphenyldiphenylamine, tris(4-carbazol-9-ylphenyl)amine, or N′-dicarbazolyl-3,5-benzene. 4 . The quantum dot according to claim 1 , wherein the at least one or more photocrosslinkable functional groups of the second repeating unit comprises at least one of an azide group, a diazirine group, a benzoylphenoxy group, an alkenyloxycarbonyl group, a (meth)acryloyl group, or an alkenyloxyalkyl group. 5 . The quantum dot of claim 1 , wherein the copolymer has a weight average molecular weight of 100 to 50,000. 6 . The quantum dot of claim 1 , wherein the copolymer has a molecular weight distribution of 1 to 2. 7 . The quantum dot of claim 1 , wherein the copolymer comprises the second repeating unit in an amount of 0.1 mol % to 10 mol %. 8 . The quantum dot of claim 1 , wherein the copolymer comprises a random copolymer. 9 . The quantum dot of claim 1 , wherein the copolymer is represented by the following Chemical Formula 1: wherein, in the Chemical Formula 1, m and n are each an integer of 1 to 200. 10 . A display apparatus, comprising: a first electrode; a second electrode; and a light emitting layer disposed between the first electrode and the second electrode and including the quantum dot of claim 1 . 11 . The display apparatus of claim 10 , further comprising: a hole transport layer between the first electrode and the light emitting layer; and an electron transport layer between the second electrode and the light emitting layer. 12 . The display apparatus of claim 11 , further comprising an interface in which the ligand of the quantum dot and the electron transport layer are in contact. 13 . The display apparatus of claim 11 , further comprising an interface in which the ligand of the quantum dot and the hole transport layer are in contact. 14 . A method of manufacturing a display apparatus, comprising: applying a solution including the quantum dots of claim 1 on a substrate; exposing the solution applied on the substrate; and apparatus etching the exposed solution to form a light emitting layer including the quantum dots. 15 . The method of manufacturing a display apparatus of claim 14 , further comprising forming an electron transport layer on the light emitting layer.
Assignees
Inventors
Classifications
by etching of existing layers · CPC title
Hole transporting layers · CPC title
Electron transporting layers · CPC title
Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title
within the light-emitting regions, e.g. having quantum confinement structures · CPC title
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Frequently asked questions
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- What does patent US12501763B2 cover?
- The quantum dot comprises a ligand which is a copolymer comprising a first repeating unit comprising at least one or more hole transporting functional groups and a second repeating unit comprising at least one or more photocrosslinking functional groups.
- Who is the assignee on this patent?
- Lg Display Co Ltd, Univ Korea Res & Bus Found
- What technology area does this patent fall under?
- Primary CPC classification H10K50/115. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 16 2025 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).