Liquid crystal composition and display panel

A display panel comprising:

• a first substrate;
• a second substrate disposed on the first substrate;
• and
• a liquid crystal layer disposed between the first substrate and the second substrate;
• wherein the liquid crystal layer comprises a liquid crystal composition comprising at least one first compound represented by the following formula I:
• are independently selected from an aromatic ring, a heteroaromatic ring, a fused ring, an aliphatic ring, or an alicyclic heterocyclic ring, wherein one or more H atoms in
• are unsubstituted or independently substituted by L0;
• Z1, Z2, and Z3 are independently selected from a single bond, —O—, —S—, —CO—, —C(O)O—, —OC(O)—, —CF2O—, —OCF2—, —CH2CH2—, —CH2O—, —OCH2—, —CH═CH—, —C≡C—, an alkylidene group having 1-10 carbon atoms, an alkenylidene group having 2-10 carbon atoms, or an alkynyl group having 2-10 carbon atoms;
• wherein one or more —CH2— groups not connected together in Z1, Z2, and Z3 are not replaced, or, one or more —CH2— groups not connected together in Z1, Z2, and Z3 are independently replaced by —O—, —S—, —CO—, —C(O)O—, —OC(O)—, —CF2O—, —OCF2—, —CH2CH2—, —CH2O—, —OCH2—, —CH═CH—, or —C≡C—;
• and wherein one or more H atoms in Z1, Z2, and Z3 are unsubstituted, or, one or more H atoms in Z1, Z2, and Z3 are independently substituted by F, Cl, Br, or I;
• L0, L1, L2, and L3 are independently selected from —F, —Cl, —Br, —I, —CN, —NO2, —NCO, —NCS, —OCN, —SCN, a linear or branched alkyl group having 1-5 carbon atoms, or an alkoxy group having 1-5 carbon atoms;
• wherein one or more H atoms in L0, L1, L2, and L3 are unsubstituted, or, one or more H atoms in L0, L1, L2, and L3 are independently substituted by F or Cl;
• P is a polymerizable group;
• Sp is independently selected from a spacer group or a single bond;
• R4 is selected from an alkyl group having 1-15 carbon atoms, an alkoxy group having 1-15 carbon atoms, a cycloalkyl group having 3-15 carbon atoms, an alkenyl group having 2-15 carbon atoms, an alkenyloxy group having 2-15 carbon atoms, an alkynyl group having 2-15 carbon atoms, an alkynyloxy group having 2-15 carbon atoms, or;
• wherein one or more —CH2— groups in R4 are not replaced, or, one or more —CH2— groups in R4 are independently replaced by —CH═CH—, —C≡C—, —CF2O—,
• —CO—, —C(O)O—, —OC(O)—, or —O—;
• and wherein one or more H atoms in R4 are unsubstituted, or, one or more H atoms in R4 are independently substituted by F, Cl, Br, or I;
• Ra is independently selected from a group capable of anchoring to a substrate;
• n is selected from 0, 1, or 2;
• p1, p2, and p3 are independently selected from 1, 2, or 3;
• and
• r1, r2, and r3 are independently selected from 0, 1, 2, or 3.