Ink Composition, Organic Material Layer Comprising Same, and Organic Light-Emitting Device Comprising Same

Patent metadata

Field	Value
Publication number	US-2025228128-A1
Application number	US-202318851531-A
Country	US
Kind code	A1
Filing date	Sep 22, 2023
Priority date	Sep 23, 2022
Publication date	Jul 10, 2025
Grant date	—

Abstract

Provided are an ink composition comprising a compound represented by Chemical Formula 1 and a first solvent represented by Chemical Formula A, an organic material layer including the same and an organic light emitting device including the same,wherein all the variables are descried herein.

First claim

1 . An ink composition comprising a compound represented by Chemical Formula 1 and a first solvent represented by Chemical Formula A:

wherein, in Chemical Formulae 1 and A,
Y1 to Y10 are the same as or different from each other, and are each independently hydrogen; deuterium; a hydroxyl group; an ether group; a carbonyl group; an ester group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted cycloalkenyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted amine group,
Cy1 to Cy4 are the same as or different from each other, and are each independently a substituted or unsubstituted hydrocarbon ring group,
Z1 and Z2 are the same as or different from each other, and are each independently O, S, Se or NR,
L is a substituted or unsubstituted divalent hydrocarbon ring group; or a substituted or unsubstituted divalent heterocyclic group,
L1 to L4 are the same as or different from each other, and are each independently a direct bond; a substituted or unsubstituted arylene group; or a substituted or unsubstituted divalent heterocyclic group,
L10 and L11 are the same as or different from each other, and are each independently a direct bond; or a substituted or unsubstituted arylene group,
X1 and X2 are the same as or different from each other, and are each independently a curable group,
R and R1 to R4 are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group,
r1 and r2 are each independently an integer from 0 to 4, and when r1 and r2 are each independently 2 or higher, each occurrence of R1 and R2 is the same as or different from each other, respectively,
f1 and f2 are each independently an integer from 1 to 5, r1+f1 is 5 or lower, and r2+f2 is 5 or lower, and
r3 and r4 are each independently an integer from 1 to 7, and when r3 and r4 are each independently 2 or higher, each occurrence of R3 and R4 is the same as or different from each other, respectively.

2 . The ink composition of claim 1 , wherein the curable group is represented by any one of the following structures:

in the structures,
R102 and R104 are the same as or different from each other, and are each independently hydrogen; deuterium; or a substituted or unsubstituted alkyl group,
L101 to L108 are the same as or different from each other, and are each independently a direct bond; —O—; a substituted or unsubstituted alkylene group; or a substituted or unsubstituted arylene group,
l104 to l108 are each independently an integer from 1 to 10, and when l104 to l108 are each independently 2 or higher, each occurrence of L101 to L108 is the same as or different from each other, respectively, and
is a moiety bonded to L10 or L11 in Chemical Formula 1.

3 . The ink composition of claim 1 , wherein the compound is represented by Chemical Formula 1-1:

in Chemical Formula 1-1,
Cy1 to Cy4, Z1, Z2, L, L1 to L4, L10, L11, X1, X2, R1 to R4, r1 to r4, f1 and f2 are defined the same as in Chemical Formula 1.

4 . The ink composition of claim 1 , wherein L is represented by any one of the following structures:

in the structures,
R10 to R31 are the same as or different from each other, and are each independently hydrogen; deuterium; a halogen group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group,
r10 to r21 are each independently an integer from 1 to 4, r22, r23, r28 and r29 are each independently an integer from 1 to 3, r24 and r25 are each independently an integer from 1 to 7, r26 is an integer from 1 to 8, r27 is an integer from 1 to 6, and when r10 to r29 are each independently 2 or higher, each occurrence of R10 to R29 is the same as or different from each other, respectively, and
is a moiety bonded to the N in Chemical Formula 1.

5 . The ink composition of claim 1 , wherein Cy1 to Cy4 are the same as or different from each other, and are each independently a substituted or unsubstituted benzene ring; or a substituted or unsubstituted naphthalene ring.

6 . The ink composition of claim 1 , wherein Y1 to Y10 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted alkyl group; or a substituted or unsubstituted alkoxy group.

7 . The ink composition of claim 1 , wherein the first solvent is represented by any one of the following structures:

8 . The ink composition of claim 1 , wherein the compound is represented by any one of the following structures:

Assignees

• Lg Chemical Ltd

Inventors

• Shin Jiyeon
• Kang Eunhye
• Lee Keunsoo
• Kim Byungjae
• Seo Minseob
• Lee Ho Gyu

Classifications

• H10K85/658

  Organoboranes · CPC title

• H10K85/626

  containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09D11/36

  based on non-aqueous solvents · CPC title

• C09D11/50

  Sympathetic, colour changing or similar inks · CPC title