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

Patent metadata

Field	Value
Publication number	US-11760926-B2
Application number	US-202016742875-A
Country	US
Kind code	B2
Filing date	Jan 14, 2020
Priority date	Jul 26, 2019
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A quantum dot surface-modified with a specific compound, a non-solvent curable composition including the quantum dot, a solvent based curable composition including the quantum dot, a cured layer manufactured utilizing the curable composition, a color filter including the cured layer, and a display device including the cured layer are disclosed.

First claim

What is claimed is:

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

wherein, in Chemical Formula 1,
R 1 is a substituted or unsubstituted C1 to C10 alkyl group or a substituted or unsubstituted C6 to C20 aryl group,
L 1 to L 3 are each independently a substituted or unsubstituted C1 to C10 alkylene group, an ester group, or an ether group, and
n is an integer of 3 to 20,
provided that when L 2 is an ester group and when L 3 is an unsubstituted C7 to C10 alkylene group:
n is an integer of 4 to 20,

provided that when L 2 is an ester group and when L 3 is an unsubstituted C1 to C6 alkylene group:
n is an integer of 4 to 20 and R 1 is selected from the group consisting of a substituted or unsubstituted C11 to C20 aryl group, a moiety represented by Formula 3-1, and a moiety represented by Formula 3-2, and

provided that when L 2 is a substituted or unsubstituted C1 to C10 alkylene group or an ether group and when L 3 is a substituted or unsubstituted C2 alkylene group:
L 1 is an ester group or an ether group, or R 1 is a substituted or unsubstituted C15 to C20 aryl group:

wherein in Formulae 3-2 and 3-2, * represents a binding site to a neighboring oxygen atom.

2. The quantum dot of claim 1 , wherein
L 1 and L 3 are each independently a substituted or unsubstituted C1 to C10 alkylene group, and
L 2 is an ester group or an ether group.

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

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

wherein, in Chemical Formula 1,
R 1 is a substituted or unsubstituted C1 to C10 alkyl group or a substituted or unsubstituted C6 to C20 aryl group,
L 1 to L 3 are each independently a substituted or unsubstituted C1 to C10 alkylene group, an ester group, or an ether group, and
n is an integer of 3 to 20,
provided that when L 2 is an ester group and when L 3 is an unsubstituted C7 to C10 alkylene group:
n is an integer of 4 to 20,

provided that when L 2 is an ester group and when L 3 is an unsubstituted C1 to C6 alkylene group:
n is an integer of 4 to 20 and R 1 is selected from the group consisting of a substituted or unsubstituted C11 to C20 aryl group, a moiety represented by Formula 3-1, and a moiety represented by Formula 3-2, and

provided that when L 2 is a substituted or unsubstituted C1 to C10 alkylene group or an ether group and when L 3 is a substituted or unsubstituted C2 alkylene group:
L 1 is an ester group or an ether group, or R 1 is a substituted or unsubstituted C15 to C20 aryl group:

wherein in Formulae 3-2 and 3-2, * represents a binding site to a neighboring oxygen atom,
wherein the compound represented by Chemical Formula 1 comprises at least one selected from compounds represented by Chemical Formula 1-4 to Chemical Formula 1-5:

5. A non-solvent curable composition comprising
a quantum dot surface-modified with a compound represented by Chemical Formula 1,
a polymerizable monomer having a carbon-carbon double bond at a terminal end, and
a light diffusing agent,
wherein the polymerizable monomer is about 35 wt % to about 80 wt % in amount based on a total weight of the non-solvent curable composition, and
the non-solvent curable composition does not contain any solvent:

wherein, in Chemical Formula 1,
R 1 is a substituted or unsubstituted C1 to C10 alkyl group or a substituted or unsubstituted C6 to C20 aryl group,
L 1 to L 3 are each independently a substituted or unsubstituted C1 to C10 alkylene group, an ester group, or an ether group, and
n is an integer of 3 to 20,
provided that when L 2 is an ester group and when L 3 is an unsubstituted C7 to C10 alkylene group:
n is an integer of 4 to 20, and

provided that when L 2 is an ester group and when L 3 is an unsubstituted C1 to C6 alkylene group:
n is an integer of 4 to 20 and R 1 is selected from the group consisting of a substituted or unsubstituted C11 to C20 aryl group, a moiety represented by Formula 3-1, and a moiety represented by Formula 3-2:

wherein in Formulae 3-2 and 3-2, * represents a binding site to a neighboring oxygen atom.

6. The non-solvent curable composition of claim 5 , wherein the polymerizable monomer has a molecular weight of about 220 g/mol to about 1,000 g/mol.

7. The non-solvent curable composition of claim 5 , wherein the polymerizable monomer is represented by Chemical Formula 2:

wherein, in Chemical Formula 2,
R 2 and R 3 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group,
L 4 and L 6 are each independently a substituted or unsubstituted C1 to C10 alkylene group, and
L 5 is a substituted or unsubstituted C1 to C10 alkylene group or an ether group.

8. The non-solvent curable composition of claim 5 , wherein the quantum dot is about 1 wt % to about 60 wt % in amount based on the total weight of the non-solvent curable composition.

9. The non-solvent curable composition of claim 5 , wherein the light diffusing agent comprises barium sulfate, calcium carbonate, titanium dioxide, zirconia, or a combination thereof.

10. The non-solvent curable composition of claim 5 , wherein the non-solvent curable composition further comprises a polymerization initiator.

11. The non-solvent curable composition of claim 5 , wherein the non-solvent curable composition further comprises a polymerization inhibitor; malonic acid; 3-amino-1,2-propanediol; a silane-based coupling agent; a leveling agent; a fluorine-based surfactant; or a combination thereof.

12. A solvent based curable composition comprising the quantum dot of claim 1 ;
a binder resin; and
a solvent.

13. The solvent based curable composition of claim 12 , further comprising a polymerizable monomer, a polymerization initiator, a light diffusing agent, or a combination thereof.

14. The solvent based curable composition of claim 12 , wherein the solvent based curable composition is a photosensitive resin composition.

15. A curing layer manufactured utilizing the composition of claim 5 .

16. A curing layer manufactured utilizing the composition of claim 12 .

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

18. A color filter comprising the cured layer of claim 16 .

19. A display device comprising the color filter of claim 17 .

20. A display device comprising the color filter of claim 18 .

Assignees

• Samsung Sdi Co Ltd

Inventors

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

Classifications

• C09K11/025 Primary

  non-luminescent particle coatings or suspension media · CPC title

• C09K11/08

  containing inorganic luminescent materials · CPC title

• G03F7/004

  Photosensitive materials (G03F7/12, G03F7/14 take precedence) · CPC title

• G03F7/027

  Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds (G03F7/075 takes precedence) · CPC title

• G03F7/09

  characterised by structural details, e.g. supports, auxiliary layers (supports for printing plates in general B41N) · CPC title