Composition including quantum dot, manufacturing method quantum dot and color filter

Patent metadata

Field	Value
Publication number	US-11762289-B2
Application number	US-201816155691-A
Country	US
Kind code	B2
Filing date	Oct 9, 2018
Priority date	Oct 27, 2017
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A photosensitive resin composition includes: (A) a binder resin; (B) a photopolymerizable monomer; (C) a photopolymerization initiator; (D) a quantum dot surface-modified with a compound having a thiol group at one terminal end and an alkoxy group, a cycloalkyl group, a carboxyl group, or a hydroxy group at the other terminal end; and (E) a solvent. A curable composition includes: (A′) a resin; (B′) a quantum dot surface-modified with a compound represented by Chemical Formula 1 or Chemical Formula 2; and (C′) a solvent. A method of manufacturing the surface-modified quantum dot, and a color filter manufactured using the photosensitive resin composition or the curable composition are also disclosed.

First claim

What is claimed is:

1. A curable composition comprising:
(A′) a resin;
(B′) a quantum dot surface-modified with a compound represented by Chemical Formula 1 or Chemical Formula 2; and
(C′) a solvent:

wherein, in Chemical Formula 1 and Chemical Formula 2,
R 1 is a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted lactone ring,
L 1 and L 2 are independently a single bond, a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, or a combination thereof, and
n is an integer of 1 or 2, and
wherein the curable composition comprises 1 wt % to 30 wt % of the resin, 1 wt % to 40 wt % of the surface-modified quantum dot, and 20 wt % to 80 wt % of the solvent based on the total amount of the curable composition, and
wherein the curable composition further comprises a diffusion agent.

2. The curable composition of claim 1 , wherein the lactone ring is a 5-membered ring or a 6-membered ring.

3. The curable composition of claim 1 , wherein in Chemical Formula 2, L 2 is a C1 to C20 alkylene group substituted with a thiol group.

4. The curable composition of claim 1 , wherein the substituted or unsubstituted C1 to C20 oxyalkylene group is a substituted or unsubstituted oxymethylene group, a substituted or unsubstituted oxyethylene group, or a combination thereof.

5. The curable composition of claim 4 , wherein the oxymethylene group is represented by Chemical Formula 3 and the oxyethylene group is represented by Chemical Formula 4:

wherein, in Chemical Formula 3 and Chemical Formula 4,
m is an integer of 1 to 5.

6. The curable composition of claim 1 , wherein Chemical Formula 1 is represented by one of Chemical Formula 1-1 to Chemical Formula 1-7 and Chemical Formula 2 is represented by Chemical Formula 2-1:

in Chemical Formula 1-3 to Chemical Formula 1-6, m is an integer of 1 to 5,

7. The curable composition of claim 1 , wherein the surface-modified quantum dot has a core-shell structure wherein the shell comprises Zn, and the thiol group at the terminal end of the compound represented by Chemical Formula 1 or Chemical Formula 2 is bonded with Zn of the shell.

8. The curable composition of claim 1 , wherein the quantum dot has a maximum fluorescence wavelength in a wavelength range of 500 nm to 680 nm.

9. The curable composition of claim 1 , wherein the solvent comprises propylene glycol monomethylether acetate, dipropylene glycol methylether acetate, ethanol, ethylene glycoldimethylether, ethylene diglycolmethylethylether, diethylene glycoldimethylether, dimethyl acetamide, 2-butoxyethanol, N-methylpyrrolidine, N-ethylpyrrolidine, propylene carbonate, γ-butyrolactone, or a combination thereof.

10. The curable composition of claim 1 , wherein the resin comprises at least one of a binder resin and an reactive unsaturated compound.

11. The curable composition of claim 10 , wherein the binder resin comprises an acryl-based resin, an epoxy resin, or a combination thereof.

12. The curable composition of claim 1 , wherein the diffusion agent is included in an amount of 0.1 wt % to 20 wt % based on the total amount of the curable composition.

13. The curable composition of claim 1 , wherein the diffusion agent comprises barium sulfate, calcium carbonate, titanium dioxide, zirconia, or a combination thereof.

14. The curable composition of claim 1 , wherein the curable composition further comprises a polymerization initiator.

15. The curable composition of claim 14 , wherein the polymerization initiator comprises a cation initiator.

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

17. A method of manufacturing a pixel for a color filter, comprising:
coating the curable composition of claim 1 on a substrate utilizing an inkjet spraying method to form a pattern; and
curing the pattern.

18. A color filter comprising a pixel for a color filter manufactured according to the method of manufacturing the pixel of claim 17 .

Assignees

• Samsung Sdi Co Ltd

Inventors

• Youn Jinsuop
• Kim Misun
• Yu Hong Jeong
• LEE Bumjin
• Kang Yonghee
• Kim Dongjun
• Son Byeonggeun
• Yim Jihyeon
• Choi Mi Jeong
• Kim Jonggi
• Park Minjee
• Paek Hojeong
• Shin Woo Jung
• Jang Young Woong

Classifications

• C09K11/025 Primary

  non-luminescent particle coatings or suspension media · CPC title

• G03F7/0048 Primary

  characterised by the solvents or agents facilitating spreading, e.g. tensio-active agents · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• G03F7/0047

  characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing · CPC title

• G03F7/027

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