Core-shell dye, photosensitive resin composition including the same, and color filter

Patent metadata

Field	Value
Publication number	US-12504684-B2
Application number	US-202217885647-A
Country	US
Kind code	B2
Filing date	Aug 11, 2022
Priority date	Sep 28, 2021
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A core-shell dye, a photosensitive resin composition including the same, and a color filter manufactured using the photosensitive resin composition, the core-shell dye including a core represented by Chemical Formula 1; and a shell represented by Chemical Formula 2, the shell surrounding the core,

First claim

What is claimed is:

1 . A core-shell dye, comprising:
a core represented by Chemical Formula 1; and a shell represented by Chemical Formula 2, the shell surrounding the core,

wherein:
in Chemical Formula 1,
L 1 to L 4 are each independently a single bond, a substituted or unsubstituted C1 to C20 alkylene group, or a substituted or unsubstituted C6 to C30 arylene group; and
R 1 to R 4 are each independently hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, or a substituted or unsubstituted C6 to C30 aryl group;
provided that at least one of R 1 and R 2 is substituted with a substituted or unsubstituted epoxy group at a terminal end and at least one of R 3 and R 4 is substituted with a substituted or unsubstituted (meth)acrylate group at a terminal end;

in Chemical Formula 2,
L′ and L″ are each independently a single bond or a substituted or unsubstituted C1 to C10 alkylene group;
Z 1 and Z 2 are each independently *—CR—* or a nitrogen atom, in which R is a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group;
X 1 and X 2 are each independently a halogen or a substituted or unsubstituted C1 to C20 alkyl group;
l and m are each independently an integer of 0 to 4; and
n is an integer of 2 or more.

2 . The core-shell dye as claimed in claim 1 , wherein:
R 1 is an epoxy group represented by Chemical Formula 4, R 3 is a (meth)acrylate group represented by Chemical Formula 3,

in Chemical Formula 3, R 5 is a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group;

in Chemical Formula 4, L 5 is a single bond or a substituted or unsubstituted C1 to C10 alkylene group.

3 . The core-shell dye as claimed in claim 1 , wherein L 1 and L 3 are each independently a C6 to C30 arylene group.

4 . The core-shell dye as claimed in claim 1 , wherein:
R 2 and R 4 are each independently a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a group represented by Chemical Formula 5-1, or a group represented by Chemical Formula 5-2,

in Chemical Formulas 5-1 and 5-2,
each L 6 is independently a single bond or a substituted or unsubstituted C1 to C10 alkylene group;
each R 6 is independently a group represented by a Chemical Formula 6 or a substituted or unsubstituted (meth)acrylate group; and
R 7 is a substituted or unsubstituted C1 to C20 alkyl group or a substituted or unsubstituted C3 to C20 cycloalkyl group;

in Chemical Formula 6, L 7 is a single bond or a substituted or unsubstituted C1 to C10 alkylene group.

5 . The core-shell dye as claimed in claim 1 , wherein both L 2 and L 4 are a single bond.

6 . The core-shell dye as claimed in claim 1 , wherein
the core represented by Chemical Formula 1 is represented by one of Chemical Formulas 1-1 to 1-3,

in Chemical Formulas 1-1 to 1-3,
each L 6 is independently a single bond or a substituted or unsubstituted C1 to C10 alkylene group;
R 2 , R 4 , and R 7 are each independently a substituted or unsubstituted C1 to C20 alkyl group or a substituted or unsubstituted C3 to C20 cycloalkyl group; and
each R 6 is independently a group represented by a Chemical Formula 6 or a substituted or unsubstituted (meth)acrylate group;

in Chemical Formula 6, L 7 is a single bond or a substituted or unsubstituted C1 to C10 alkylene group.

7 . The core-shell dye as claimed in claim 1 , wherein the core represented by Chemical Formula 1 is represented by one of the following Chemical Formulae,

8 . The core-shell dye as claimed in claim 1 , wherein:
one of Z 1 or Z 2 is *—CH—* or a nitrogen atom, and the other one of Z 1 or Z 2 is *—CH—*.

9 . The core-shell dye as claimed in claim 1 , wherein:
X 1 and X 2 are each independently a halogen atom, and l+m is an integer of 1 to 4.

10 . The core-shell dye as claimed in claim 1 , wherein L′ and L″ are each independently a substituted or unsubstituted C1 to C10 alkylene group.

11 . The core-shell dye as claimed in claim 1 , wherein n is 2.

12 . The core-shell dye as claimed in claim 1 , wherein:
the shell represented by Chemical Formula 2 is represented by Chemical Formula 2-1 or Chemical Formula 2-2,

in Chemical Formulas 1-1 and 1-2, l is an integer of 0 to 4.

13 . The core-shell dye as claimed in claim 1 , wherein:
the shell represented by Chemical Formula 2 is represented by Chemical Formula 2-1-1, Chemical Formula 2-1-2, Chemical Formula 2-2-1, or Chemical Formula 2-2-2,

14 . The core-shell dye as claimed in claim 1 , wherein the core-shell dye includes the core and the shell in a mole ratio of 1:1.

15 . The core-shell dye as claimed in claim 1 , wherein the core-shell dye is represented by one of the following Chemical Formulae,

Assignees

• Samsung Sdi Co Ltd

Inventors

• Yang Yeji
• KIM Sundae
• Jeong Euisoo
• Kim Ieju
• Park Baek Soung
• Lee Yeon Soo
• Lee Young
• Cho Myungho

Classifications

• H10F39/8053

  Colour filters · CPC title

• C09B67/0013

  with polymeric coatings · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• C09B57/007 Primary

  Squaraine dyes · CPC title

• G03F7/0045

  with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors · CPC title