PSA-type liquid crystal composition and display device having same

A PSA liquid crystal composition comprising:

• a host liquid crystal component A and a polymerizable component B,
• wherein the host liquid crystal component A comprises one or more liquid crystal compounds, and the polymerizable component B comprises:
• at least one compound selected from a group consisting of the compounds of general formula I-1:
• at least one compound selected from a group consisting of the compounds of general formula I-2:
• and
• at least one compound selected from a group consisting of the compounds of general formula I-3:
• in which,
• ring A, ring B, ring C, ring D, ring E, ring F, ring G, ring H and ring I each independently represents phenylene or naphthylene;
• X2-2, X2-3, X2-4, X3-2, X3-3, and X3-4 each independently represents a single bond, a C1-12 linear alkylene, a C3-12 branched alkylene, wherein one or more —CH2— in the C1-12 linear alkylene or in the C3-12 branched alkylene can be replaced by —O—, —S—, —CO—, —CH═CH— or —C≡C— in a manner that heteroatoms are not directly connected to each other, —H in one or more —CH2— in the C1-12 linear alkylene or in the C3-12 branched alkylene can be substituted by halogen;
• RA, RB, RC, RD, RE, RF, RG, RH and RI each independently represents halogen, a C1-5 halogenated or unhalogenated linear alkyl or alkoxy, or a C3-5 halogenated or unhalogenated branched alkyl or alkoxy;
• P1-1, P1-2, P2-1, P2-2, P3-1 and P3-2 each independently represents a polymerizable group;
• a, b, c, d, e, f, g, h and i each independently represents 0, 1, 2 or 3, and when a is 2 or 3, RA can be same or different;
• when b is 2 or 3, RB can be same or different;
• when c is 2 or 3, RC can be same or different;
• when d is 2 or 3, RD can be same or different;
• when e is 2 or 3, RE can be same or different;
• when f is 2 or 3, RF can be same or different;
• when g is 2 or 3, RG can be same or different;
• when h is 2 or 3, RH can be same or different;
• when i is 2 or 3, RI can be same or different;
• wherein both X1-1 and X1-3 represent single bond, and X1-2 represents —CH2O—, —OCH2—, —CO—O—, —O—CO—, —CH2CH2—, —(CH2)3—, —(CH2)4—, —(CH2)3O—, —O(CH2)3—, —O—, —CF2—, —CF2O—, —OCF2—, —CH(CH3)CH2—, —C(CH3)2CH2—, —CH2C(CH3)2—, —C(CH3)2CH(CH3)—, —C(CH3)2C(CH3)2—, —C(CH3)2O—, —OC(CH3)2—, —CH(CH2CH3)CH2—, —S—, —SCH2—, —CH2S—, —CH═CH—, —C≡C—, —CH═CH—CO—O— or —O—CO—CH═CH;
• wherein both X2-1 and X2-4 represent a single bond, at least one of X2-2 and X2-3 is not a single bond, and c+d+e≥1, and n2≥1, wherein n2 represents the number of groups that are not single bond in X2-1, X2-2, X2-3 and X2-4;
• and
• wherein X3-1 and X3-5 are single bond, and at least one of X3-2, X3-3 and X3-4 is not a single bond, and f+g+h+i≥2, n3>1, wherein n3 represents the number of groups that are not single bond in X3-1, X3-2, X3-3, X3-4 and X3-5.