# US 2014/0152949 A1 · Liquid crystal display

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- Number: US 2014/0152949 A1
- Document ID: US20140152949A1
- Status: Published application
- Kind: A1
- Application number: 14/172,451
- Filed: 2014-02-04
- Published: 2014-06-05
- Earliest claimed: 2008-08-07
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Jun-Hyup LEE; Jae-Jin LYU
- Web page: https://patentgrep.com/patent/US20140152949A1

## CPC

- G02F 1/133711: {by organic films, e.g. polymeric films}
- G02F 1/137: characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- C09K 2323/00: Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K 2323/02: Alignment layer characterised by chemical composition
- G02F 1/133365: {Cells in which the active layer comprises a liquid crystalline polymer}
- G02F 1/133397: {for suppressing after-image or image-sticking}
- G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes}
- G02F 1/133726: {made of a mesogenic material}
- G02F 1/133788: {by light irradiation, e.g. linearly polarised light photo-polymerisation}
- G02F 1/13712: {the liquid crystal having negative dielectric anisotropy}
- G02F 1/13775: {Polymer-stabilized liquid crystal layers}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.

## Claims

### Claim 1

A liquid crystal display comprising:
a first substrate;
a second substrate facing the first substrate;
a first field generating electrode disposed on the first substrate;
a second field generating electrode disposed on the second substrate; and
a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal, a first alignment assistant and a second alignment assistant,
wherein the first alignment assistant includes a non-mesogen and three or more photo-polymerizable groups, and
a second alignment assistant includes a mesogen and two or more photo-polymerizable groups.

### Claim 2 (depends on 1)

The liquid crystal display of claim 1, wherein
the photo-polymerizable group includes at least one group selected from the group consisting of an acrylate group, a methacrylate group, and a combination comprising at least one of the foregoing photo-polymerizable groups.

### Claim 3 (depends on 2)

The liquid crystal display of claim 2, wherein
the first alignment assistant includes at least one compound selected from the group of compounds represented by Chemical Formulas 5 to 10:

### Claim 4 (depends on 2)

The liquid crystal display of claim 2, wherein
the second alignment assistant includes at least one compound selected from the group of compounds represented by Chemical Formulas 1 to 4 and Chemical Formulas 11 to 21:

### Claim 5 (depends on 1)

The liquid crystal display of claim 1, wherein
at least one of the first alignment assistant and the second alignment assistant is contained in an amount between about 0.1 weight percent to about 10 weight percent with respect to the content of the liquid crystal.

### Claim 6 (depends on 5)

The liquid crystal display of claim 5, wherein
the second alignment assistant is contained in an amount between about 40 weight percent to about 90 weight percent with respect to the total content of the first and the second alignment assistants.

### Claim 7 (depends on 1)

The liquid crystal display of claim 1, wherein
at least one of the first and the second field generating electrodes comprises a branch shape.

### Claim 8 (depends on 1)

The liquid crystal display of claim 1, wherein:
at least one of the first and the second alignment assistants comprises a non-polymerized alignment assistant; and
the non-polymerized alignment assistant is contained in an amount less than or equal to about 5 weight percent with respect to a total content of the first and the second alignment assistant.