Granted Patent B2

US 12,650,643 · App. 18/446,373 · Granted Jun 9, 2026

Inventors: Jinsuop Youn (Suwon-si, KR); Misun Kim (Suwon-si, KR); Hong Jeong Yu (Suwon-si, KR); Bumjin Lee (Suwon-si, KR); Yonghee Kang (Suwon-si, KR); Dongjun Kim (Suwon-si, KR); Byeonggeun Son (Suwon-si, KR); Jihyeon Yim (Suwon-si, KR); Mi Jeong Choi (Suwon-si, KR); Jonggi Kim (Suwon-si, KR); Minjee Park (Suwon-si, KR); Hojeong Paek (Suwon-si, KR); Woo Jung Shin (Suwon-si, KR); Young Woong Jang (Suwon-si, KR)

Assignee: Samsung SDI Co., Ltd.

G03F7/0048C09K11/025C09K11/883G03F7/0007G03F7/027G03F7/031G03F7/033G03F7/038B82Y20/00B82Y30/00B82Y35/00

Abstract

Claims (42)

1 . A photosensitive composition, comprising:

(A) a binder resin;

(B) a photopolymerizable monomer;

(C) a photopolymerization initiator;

(D) a quantum dot surface-modified with a first compound having a thiol group at one terminal end or at the middle of a main chain and having an alkoxy group, a cycloalkyl group, a carboxyl group, or a hydroxy group at the other terminal end or a second compound having each thiol group at one terminal end and at the middle of the main chain and having an alkoxy group, a cycloalkyl group, a carboxyl group, or a hydroxy group at the other terminal end;

(E) a solvent; and

(F) a diffusion agent.

2 . The photosensitive composition of claim 1 , wherein the alkoxy group is a C1 to C10 alkoxy group and the cycloalkyl group is a C3 to C10 cycloalkyl group.

3 . The photosensitive composition of claim 1 , wherein the first compound and second compound each independently comprises an ester group.

4 . The photosensitive 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.

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

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

7 . The photosensitive composition of claim 1 , wherein the binder resin comprises an acryl-based binder resin, a cardo-based binder resin, or a combination thereof.

8 . The photosensitive 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 photosensitive composition.

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

10 . The photosensitive composition of claim 1 , wherein the photosensitive composition comprises 1 wt % to 30 wt % of the (A) binder resin; 0.1 wt % to 30 wt % of the (B) photopolymerizable monomer; 0.1 wt % to 10 wt % of the (C) photopolymerization initiator; 1 wt % to 40 wt % of the (D) surface-modified quantum dot; and a balance amount of the (E) solvent based on the total amount of the photosensitive composition.

11 . The photosensitive composition of claim 1 , wherein the photosensitive 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.

12 . A photosensitive composition, comprising:

(A) a binder resin;

(B) a photopolymerizable monomer;

(C) a photopolymerization initiator;

(D) a quantum dot surface-modified with a first compound or a second compound;

(E) a solvent; and

(F) a diffusion agent,

wherein the first compound is represented by Chemical Formula 1 and the second compound is represented by Chemical Formula 2:

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.

13 . The photosensitive composition of claim 12 , wherein the lactone ring is a 5-membered ring or a 6-membered ring.

14 . The photosensitive composition of claim 12 , wherein in Chemical Formula 2, L 2 is a C1 to C20 alkylene group substituted with a thiol group.

15 . The photosensitive composition of claim 12 , 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.

16 . A photosensitive composition, comprising:

(A) a binder resin;

(B) a photopolymerizable monomer;

(C) a photopolymerization initiator;

(D) a quantum dot surface-modified with a first compound or a second compound;

(E) a solvent; and

(F) a diffusion agent,

wherein the first compound is represented by one of Chemical Formula 1-1 to Chemical Formula 1-7 and the second compound 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,

17 . A color filter manufactured by using the photosensitive composition of claim 1 .

Assignments (1)

Priority Claims (2)

Continuity (2)

References Cited (240)