Alignment layer, liquid crystal display including the same, and method of manufacturing liquid crystal display

Patent metadata

Field	Value
Publication number	US-9971202-B2
Application number	US-201514818815-A
Country	US
Kind code	B2
Filing date	Aug 5, 2015
Priority date	Feb 5, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

Provided is an alignment layer including a copolymer including a first compound and a second compound. The first compound is different than the second compound. The first compound and the second compound are each independently selected from a compound represented by Formula 1:

First claim

What is claimed is:

1. An alignment layer, comprising:
a cross-linked copolymer formed of a first compound and a second compound,
wherein the first compound is different than the second compound,
wherein the first compound and the second compound are each independently selected from a compound represented by Formula 1:

wherein in Formula 1,
L 1 is selected from a single bond or —R 1 O—, and L 2 is selected from a single bond or —OR 2 —,
wherein R 1 and R 2 are each independently a substituted or unsubstituted C 1 -C 20 alkylene group,
wherein R 3 and R 4 are each independently selected from —F, a cyano group, a nitro group, a methyl group, an ethyl group, a propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, an n-pentyl group, an iso-pentyl group, a sec-pentyl group, a tert-pentyl group, an n-hexyl group, an iso-hexyl group, a sec-hexyl group, a tert-hexyl group, an n-heptyl group, an iso-heptyl group, a sec-heptyl group, a tert-heptyl group, an n-octyl group, an iso-octyl group, a sec-octyl group, a tert-octyl group, an n-nonyl group, an iso-nonyl group, a sec-nonyl group, a tert-nonyl group, an n-decanyl group, an iso-decanyl group, a sec-decanyl group, a tert-decanyl group, a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentoxy group, a phenyl group, a naphthyl group, a pyridinyl group, a pyrimidinyl group, or a triazinyl group; or
a methyl group, an ethyl group, a propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, an n-pentyl group, an iso-pentyl group, a sec-pentyl group, a tert-pentyl group, an n-hexyl group, an iso-hexyl group, a sec-hexyl group, a tert-hexyl group, an n-heptyl group, an iso-heptyl group, a sec-heptyl group, a tert-heptyl group, an n-octyl group, an iso-octyl group, a sec-octyl group, a tert-octyl group, an n-nonyl group, an iso-nonyl group, a sec-nonyl group, a tert-nonyl group, an n-decanyl group, an iso-decanyl group, a sec-decanyl group, a tert-decanyl group, a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentoxy group, a phenyl group, a naphthyl group, a pyridinyl group, a pyrimidinyl group, and a triazinyl group, each substituted with at least one selected from —F, a cyano group, a nitro group, a phenyl group, a naphthyl group, a pyridinyl group, a pyrimidinyl group, a triazinyl group, and —Si(Q 33 )(Q 34 )(Q 35 ); or —Si(Q 1 )(Q 2 )(Q 3 );
wherein Q 1 , Q 2 , Q 3 , Q 33 , Q 34 and Q 35 are each independently selected from a hydrogen, a C 1 -C 20 alkyl group, a C 1 -C 2 alkoxy group, a phenyl group, a naphthyl group, a pyridinyl group, a pyrimidinyl group, a triazinyl group, a quinolinyl group, or an iso-quinolinyl group,
wherein R 5 , R 6 , R 7 and R 8 are each independently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a substituted or unsubstituted C 1 -C 20 alkyl group, or a substituted or unsubstituted C 1 -C 20 alkoxy group,
wherein a1 and a2 are each independently an integer selected from 0 to 4,
wherein at least one substituent of the substituted C 1 -C 20 alkylene group, substituted C 1 -C 60 alkyl group, substituted C 2 -C 60 alkenyl group, substituted C 2 -C 60 alkynyl group, substituted C 1 -C 60 alkoxy group, substituted C 3 -C 10 cycloalkyl group, substituted C 1 -C 10 heterocycloalkyl group, substituted C 3 -C 10 cycloalkenyl group, substituted C 1 -C 10 heterocycloalkenyl group, substituted C 6 -C 60 aryl group, substituted C 6 -C 60 aryloxy group, substituted C 6 -C 60 arylthio group, substituted C 1 -C 60 heteroaryl group, substituted monovalent non-aromatic condensed polycyclic group, and substituted monovalent non-aromatic condensed heteropolycyclic group is selected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group,
wherein Q 1 , Q 2 , Q 3 , Q 4 , and Q 5 are each independently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group;
wherein the first compound is selected from a compound in which at least one of a1 and a2 in Formula 1 is 1, 2, 3, or 4, and the second compound is selected from a compound in which at least one of a1 and a2 in Formula 1 is 0; and
wherein an amount of the first compound is about 70 parts by weight to about 80 parts by weight based on 100 parts by weight of a total amount of the first compound and the second compound, and the amount of the second compound is about 20 parts by weight to about 30 parts by weight based on 100 parts by weight of the total amount of the first compound and the second compound.

2. The alignment layer of claim 1 , wherein L 1 is —R 1 O—, and L 2 is —OR 2 —, and wherein R 1 and R 2 are each independently a C 1 -C 20 alkylene group.

3. The alignment layer of claim 1 , wherein a1 and a2 are each independently selected from 0 and 1.

4. The alignment layer of claim 1 , wherein the first compound is selected from a compound in which R 1 and R 2 in Formula 1 are a C 1 -C 3 alkylene group, and the second compound is selected from a compound in which R 1 and R 2 in Formula 1 are a C 4 -C 20 alkylene group.

5. The alignment layer of claim 1 , wherein the compound represented by Formula 1 is represented by one of Compounds 1-1, 1-2 and 1-3:

6. The alignment layer of claim 1 , wherein
the cross-linked copolymer formed of the first compound and the second compound comprises a first repeating unit and a second repeating unit, wherein the first repeating unit is different than the second repeating unit, wherein the first repeating unit and the second repeating unit each independently comprise a polymer selected from a unit represented by Formula 1-1:

wherein in Formula 1-1,
L 1 is selected from a single bond or —R 1 O—, and L 2 is selected from a single bond or —OR 2 —,
wherein R 1 and R 2 are each independently a substituted or unsubstituted C 1 -C 20 alkylene group,

Assignees

• Samsung Display Co Ltd

Inventors

• Kong Taejin
• Kim Sanggyun
• Suh Duckjong
• Lee Taekjoon

Classifications

• G02F1/133788

  by light irradiation, e.g. linearly polarised light photo-polymerisation · CPC title

• Y10T428/1023

  Cross-Sectional Technologies · mapped topic

• G02F1/139

  based on orientation effects in which the liquid crystal remains transparent · CPC title

• G02F2001/133742

  Physics · mapped topic

• G02F2001/133397

  Physics · mapped topic