Quantum dot, curable composition comprising the same, cured layer using the composition, and color filter including the cured layer

Patent metadata

Field	Value
Publication number	US-12351750-B2
Application number	US-202017595497-A
Country	US
Kind code	B2
Filing date	Sep 18, 2020
Priority date	Oct 14, 2019
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

Disclosed are a surface-modified quantum dot, a curable composition including the quantum dot, a cured layer, and a color filter.

First claim

The invention claimed is:

1. A quantum dot surface-modified with a compound represented by Chemical Formula 1:

wherein, in Chemical Formula 1,
L is a divalent moiety derived from acid dianhydride,
L 1 and L 2 are independently a substituted or unsubstituted C1 to C20 alkylene group,
R 1 is a substituted or unsubstituted C1 to C20 alkyl group or a substituted or unsubstituted C6 to C20 aryl group, and
m is an integer of 1 to 20.

2. The quantum dot of claim 1 , wherein the L is a divalent moiety derived from a compound represented by one of Chemical Formula 2-1 to Chemical Formula 2-15:

3. The quantum dot of claim 1 , wherein the L is represented by one selected from the following:

4. The quantum dot of claim 1 , wherein Chemical Formula 1 is represented by one of Chemical Formula 1-1 to Chemical Formula 1-3:

and
wherein, in Chemical Formula 1-1 to Chemical Formula 1-3,
n is an integer of 1 to 20.

5. The quantum dot of claim 1 , wherein the quantum dot has a maximum fluorescence emission wavelength from 500 nm to 680 nm.

6. A solvent-free curable composition comprising
the quantum dot of claim 1 ; and
a polymerizable monomer having a carbon-carbon double bond at the terminal end.

7. The solvent-free curable composition of claim 6 , wherein the polymerizable monomer has a molecular weight of 220 to 1,000 g/mol.

8. The solvent-free curable composition of claim 6 , wherein the polymerizable monomer is represented by Chemical Formula 3:

and
wherein, in Chemical Formula 3,
R 2 and R 3 are independently a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group,
L 7 and L 9 are independently a substituted or unsubstituted C1 to C10 alkylene group, and
L 8 is a substituted or unsubstituted C1 to C10 alkylene group, or an ether group (*—O—*).

9. The solvent-free curable composition of claim 6 , comprising
1 wt % to 60 wt % of the quantum dot, and
40 wt % to 99 wt % of the polymerizable monomer.

10. The solvent-free curable composition of claim 6 , further comprising a polymerization initiator, a light diffusing agent, or a combination thereof.

11. A solvent-type curable composition comprising
the quantum dot of claim 1 ;
a binder resin; and
a solvent.

12. The solvent-type curable composition of claim 11 , comprising
1 wt % to 40 wt % of the quantum dot;
1 wt % to 30 wt % of the binder resin; and
a balance amount of the solvent.

13. The solvent-type curable composition of claim 11 , further comprising a polymerizable monomer, a polymerization initiator, a light diffusing agent, or a combination thereof.

14. A cured layer produced from the solvent-free curable composition of claim 6 .

15. A color filter comprising the cured layer of claim 14 .

Assignees

• Samsung Sdi Co Ltd

Inventors

• Kang Yonghee
• Kim Jonggi
• Yim Jihyeon
• Kim Dongjun
• Kim Misun
• Park Minjee
• LEE Bumjin
• Lee Injae
• Choi Mi Jeong

Classifications

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title

• C08K2201/011

  Nanostructured additives · CPC title

• C08K2003/2241

  Titanium dioxide · CPC title

• C08K9/04

  Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)} · CPC title

• C08K3/22

  of metals · CPC title