Negative dielectric anisotropic liquid crystal composition, liquid crystal display element and liquid crystal display

1. A negative dielectric anisotropic liquid crystal composition, wherein said negative dielectric anisotropic liquid crystal composition comprises a first component composed of one or more compounds represented by formula I2 and a second component composed of one or more polymerizable compounds,

wherein R 1 represents an alkyl group having a carbon atom number of 1-10;

R 2 represents —(CH 2 ) p —CH═CH—C q H 2q+1 , with p representing 1, 2 or 3, q representing 0, 1, 2 or 3.

2. The negative dielectric anisotropic liquid crystal composition according to claim 1 , wherein said polymerizable compound is a compound represented by formula II:

wherein, R 3 and R 4 each independently represent W-Sp-, H, Cl, F, or an alkyl group having a carbon atom number of 1-12, with one or two non-neighboring CH 2 groups in said alkyl group having a carbon atom number of 1-12 being optionally replaced by —O—, —CH 2 ═CH 2 —, —CO—, —OCO— or —COO—, wherein at least one of R 3 and R 4 represents W-Sp-;

each independently represent a phenylene group, a phenylene group optionally substituted with W-Sp-, Cl, F, an alkyl group having a carbon atom number of 1-12 or an alkoxy group having a carbon atom number of 1-12, or an indanyl group, wherein one or two non-neighboring CH 2 groups in said alkyl group having a carbon atom number of 1-12 and said alkoxy group having a carbon atom number of 1-12 are optionally replaced by —O—, —CH 2 ═CH 2 —, —CO—, —OCO— or —COO—; furthermore,

and R 3 are bonded at any position of

and

and R 4 are bonded at any position of

n represents 0, 1 or 2;

W represents a methacrylate group or an acrylate group; and

V and Sp each independently represent a single bond, —COO—, —CH 2 O— or —CH 2 CH 2 —.

3. The negative dielectric anisotropic liquid crystal composition according to claim 2 , wherein:

the compound represented by formula II is selected from the group consisting of compounds represented by formulas II1-II4:

wherein R 4 and K each independently represent W 1 -Sq-, H, Cl, F, or an alkyl group having a carbon atom number of 1-12, wherein one or two non-neighboring CH 2 groups in said alkyl group having a carbon atom number of 1-12 is optionally replaced by —O—, —CH 2 ═CH 2 —, —CO—, —OCO— or —COO—, W and W 1 each independently represent a methacrylate group or an acrylate group;

V, Sp, and Sq each independently represent a single bond, —COO—, —CH 2 O—, or —CH 2 CH 2 —; and

each i independently represents 0, 1, 2, 3 or 4.

4. The negative dielectric anisotropic liquid crystal composition according to claim 1 , wherein said negative dielectric anisotropic liquid crystal composition further comprises one or more compounds represented by formula III:

wherein R 5 and R 6 each independently represent an alkyl group having a carbon atom number of 1-10 or an alkoxy group having a carbon atom number of 1-10, and any one or more CH 2 in R 5 and R 6 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl;

each independently represent

and

r represents 1 or 2.

5. The negative dielectric anisotropic liquid crystal composition according to claim 4 , wherein said one or more compounds represented by formula III are selected from the group consisting of compounds represented by III1-III5,

wherein R 5 and R 6 are each independently an alkyl group having a carbon atom number of 1-10 or an alkoxy group having a carbon atom number of 1-10, and any one or more CH 2 in R 6 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl.

6. The negative dielectric anisotropic liquid crystal composition according to claim 1 , wherein said negative dielectric anisotropic liquid crystal composition further comprises one or more compounds represented by formula IV:

wherein R 7 and R 8 each independently represent an alkyl group having a carbon atom number of 1-10, a fluoro-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, or a fluoro-substituted alkoxy group having a carbon atom number of 1-10, and any one or more CH 2 in R 7 and R 8 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl;

Z 1 and Z 2 each independently represent a single bond, —COO—, —CH 2 O— or —CH 2 CH 2 —;

each independently represent

x represents 1, 2 or 3; and y represents 0 or 1.

7. The negative dielectric anisotropic liquid crystal composition according to claim 6 , wherein said one or more compounds represented by formula IV are selected from the group consisting of compounds represented by formulas IV1 to IV13:

wherein R 7 and R 8 each independently represent an alkyl group having a carbon atom number of 1-10, a fluoro-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, or a fluoro-substituted alkoxy group having a carbon atom number of 1-10, and any one or more CH 2 in R 7 and R 8 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl.

8. The negative dielectric anisotropic liquid crystal composition according to claim 1 , wherein said negative dielectric anisotropic liquid crystal composition further comprises one or more compounds represented by formula V:

wherein R 9 and R 10 each independently represents an alkyl group having a carbon atom number of 1-10, a fluoro-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluoro-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluoro-substituted alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluoro-substituted alkenoxy group having a carbon atom number of 3-8, and any CH 2 in R 9 and R 10 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl; and

Q 1 represents —O—, —S—, —CH 2 O— or —CH 2 S—.

9. The negative dielectric anisotropic liquid crystal composition according to claim 1 , wherein in said negative dielectric anisotropic liquid crystal composition, the content of said compound represented by formula I2 is 1%-50% by mass.

10. A liquid crystal display element or liquid crystal display, comprising the negative dielectric anisotropic liquid crystal composition according to claim 1 , said display element or display being a PSA-VA, PSA-OCB, PS-IPS, PS-FFS, PS-TN or SA-VA display element or display.

11. The negative dielectric anisotropic liquid crystal composition according to claim 2 , wherein in said negative dielectric anisotropic liquid crystal composition, the content of said compound represented by formula II is 0.1%-1% by mass.

12. The negative dielectric anisotropic liquid crystal composition according to claim 4 , wherein in said negative dielectric anisotropic liquid crystal composition, the content of said compound represented by formula III is 10%-50% by mass.

13. The negative dielectric anisotropic liquid crystal composition according to claim 6 , wherein in said negative dielectric anisotropic liquid crystal composition, the content of said compound represented by formula IV is 1%-60% by mass.

14. The negative dielectric anisotropic liquid crystal composition according to claim 8 , wherein in said negative dielectric anisotropic liquid crystal composition, the content of said compound represented by formula V is 1%-50% by mass.