# US 9,518,223 B2 · Liquid crystal composition and liquid crystal display including the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,518,223 B2
- Document ID: US9518223B2
- Status: Granted
- Kind: B2
- Application number: 14/867,315
- Filed: 2015-09-28
- Published: 2016-07-14
- Granted: 2016-12-13
- Earliest claimed: 2015-01-13
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Ji Hong Bae; Keun Chan Oh
- Web page: https://patentgrep.com/patent/US9518223B2

## CPC

- C09K 19/3402: {having oxygen as hetero atom (sugars C09K19/0422)}
- C09K 19/56: Aligning agents
- G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes}
- G02F 1/133711: {by organic films, e.g. polymeric films}
- G02F 1/133753: {with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle}
- G02F 1/133788: {by light irradiation, e.g. linearly polarised light photo-polymerisation}
- 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 2019/0444: {characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group}
- C09K 2019/123: {Ph-Ph-Ph}
- C09K 2019/3009: {Cy-Ph}
- C09K 2019/3422: {the heterocyclic ring being a six-membered ring}
- G02F 1/133761: {with different pretilt angles}
- G02F 1/13712: {the liquid crystal having negative dielectric anisotropy}
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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

## Abstract

A liquid crystal composition includes a photoinitiator; an alignment aid; a neutral liquid crystal compound; and a polar liquid crystal compound, wherein the neutral liquid crystal compound includes at least one of compounds represented by Chemical Formulas N-1 to N-10 below:

## Claims

### Claim 1

A liquid crystal composition comprising:
a photoinitiator;
an alignment aid; and
a neutral liquid crystal compound
comprising at least one of the compounds represented by Chemical Formulas N-1 to N-10 below:
wherein in Chemical Formulas N-1 to N-10 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups; and
a polar liquid crystal compound.

### Claim 2 (depends on 1)

The liquid crystal composition of claim 1, wherein:
the polar liquid crystal compound comprises at least one of the compounds represented by Chemical Formulas NP-1 to NP-7 below:
wherein in Chemical Formulas NP-1 to NP-7 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 3 (depends on 2)

The liquid crystal composition of claim 2, further comprising:
at least one of compounds represented by Chemical Formulas G-1 to G-10 below:
wherein in Chemical Formulas G-1 to G-10 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 4 (depends on 2)

The liquid crystal composition of claim 2, further comprising:
at least one of the compounds represented by Chemical Formulas G-1 to G-9 below:
wherein in Chemical Formulas G-1 to G-9 above, X comprises one of C1-C5 alkyl group, and Y comprises one of C1-C5 alkyl group.

### Claim 5 (depends on 2)

The liquid crystal composition of claim 2, further comprising:
at least one of the compounds represented by Chemical Formulas G-3 to G-10 below:
wherein in Chemical Formulas G-3 to G-10 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 6 (depends on 3)

The liquid crystal composition of claim 3, further comprising:
at least one of the polar liquid crystal compounds represented by Chemical Formulas PI-1 to PI-4 below:
wherein in Chemical Formulas PI-1 to PI-4 above, n, n1, and n2 are 1 to 3; A, A1 and A2 each independently is one of
L1 to L8 each independently is H, F, Cl, OCF3, CF3, CH2F and CHF2; Z, Z1, and Z2 each independently is —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O, —OCH2—, —SCH2—, CH2S—, —CH2CH2—, —C2F4—, —CH2—CF2—, —CF2CH2—, —(CH2)z- (z is 1 to 3), —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C═C— and —CH═CHCH2O—, and in Chemical Formulas PI-1 to PI-4 above, each R independently comprises one of hydrogen, halogen, a cyano group and C1 to C12 alkyl groups.

### Claim 7 (depends on 6)

The liquid crystal composition of claim 6, wherein:
the polar liquid crystal compounds represented by Chemical Formulas PI-1 to PI-4 above have a dielectric anisotropy (Δ∈) of 10 to 30.

### Claim 8 (depends on 2)

The liquid crystal composition of claim 2, wherein:
the photoinitiator is included in a content of 0.005 wt % to 0.5 wt % (based on the total weight of the liquid crystal composition).

### Claim 9 (depends on 8)

The liquid crystal composition of claim 8, wherein:
the photoinitiator has a light absorption wavelength range of 240 nanometer to 380 nanometer.

### Claim 10 (depends on 2)

The liquid crystal composition of claim 2, wherein:
the alignment aid is a compound comprising a polymerization group.

### Claim 11

A liquid crystal display comprising:
a first substrate;
a second substrate facing the first substrate; and
a liquid crystal layer positioned between the first substrate and the second substrate,
wherein the liquid crystal layer includes a photoinitiator, an alignment aid, a neutral liquid crystal compound, and a polar liquid crystal compound, and
the neutral liquid crystal compound comprises at least one of the compounds represented by Chemical Formulas N-1 to N-10 below:
wherein in Chemical Formulas N-1 to N-10 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 12 (depends on 11)

The liquid crystal display of claim 11, wherein:
the polar liquid crystal compound comprises at least one of the compounds represented by Chemical Formulas NP-1 to NP-7 below:
wherein in Chemical Formulas NP-1 to NP-7 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 13 (depends on 12)

The liquid crystal display of claim 12, wherein:
the liquid crystal layer further comprises at least one of the compounds represented by Chemical Formulas G-1 to G-10 below:
wherein in Chemical Formulas G-1 to G-10 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 14 (depends on 12)

The liquid crystal display of claim 12, further comprising:
at least one of the compounds represented by Chemical Formulas G-1 to G-9 below:
wherein in Chemical Formulas G-1 to G-9 above, X comprises one of C1-C5 alkyl group, and Y comprises one of C1-C5 alkyl groups.

### Claim 15 (depends on 12, 13)

The liquid crystal display of claim 13, 12, further comprising:
at least one of the compounds represented by Chemical Formulas G-3 to G-10 below:
wherein in Chemical Formulas G-3 to G-10 above, X comprises one of C1-C5 alkyl groups, and Y comprises one of C1-C5 alkyl groups.

### Claim 16 (depends on 13)

The liquid crystal display of claim 13, wherein:
the liquid crystal layer further includes at least one of the polar liquid crystal compounds represented by Chemical Formulas PI-1 to PI-4 below:
wherein in Chemical Formulas PI-1 to PI-4 above, n, n1, and n2 are 1 to 3; A, A1 and A2 each independently is one of
L1 to L8 each independently is H, F, Cl, OCF3, CF3, CH2F and CHF2; Z, Z1, and Z2 each independently is —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O, —OCH2—, —SCH2—, CH2S—, —CH2CH2—, —C2F4—, —CH2—CF2—, —CF2CH2—, —(CH2)z- (z is 1 to 3), —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C═C— and —CH═CHCH2O—, and in Chemical Formulas PI-1 to PI-4 above, each R independently comprises one of hydrogen, halogen, a cyano group and C1 to C12 alkyl groups.

### Claim 17 (depends on 16)

The liquid crystal display of claim 16, wherein:
the polar liquid crystal compounds represented by Chemical Formulas PI-1 to PI-4 above have a dielectric anisotropy (Δ∈) of 10 to 30.

### Claim 18 (depends on 12)

The liquid crystal display of claim 12, wherein:
the photoinitiator is included in a content of 0.005 wt % to 0.5 wt % (based on the total weight of the liquid crystal layer).

### Claim 19 (depends on 18)

The liquid crystal display of claim 18, wherein:
the photoinitiator has a light absorption wavelength range of 240 nanometer to 380 nanometer.

### Claim 20 (depends on 12)

The liquid crystal display of claim 12, wherein:
the alignment aid is a compound comprising a polymerization group.