Liquid crystal medium and liquid crystal display

A mesogenic medium exhibiting a blue phase, comprising component A, component B, or a combination thereof,

• wherein:
• component A consists of one or more compounds of formula I-M
• wherein
• R1 is alkyl with 1 to 9 C-atoms, which is straight chain or branched, unsubstituted, mono- or poly-substituted by F, Cl or CN, and in which one or more CH2 groups are each optionally replaced, in each case independently from one another, by —O—, —S—, —NR01—, —SiR01R02—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, —CY01═CY02— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another,
• L1 is H or F,
• X1 is F, CN or CF3,
• Y01 and Y02 are, independently of each other, F, Cl or CN, and alternatively one of them may be H, and
• R01 and R02 are, independently of each other, H or alkyl with 1 to 12 C-atoms;
• and
• component B consists of one or more compounds of formula I-U
• wherein
• R1, L1 and X1 have the respective meanings given above;
• and
• wherein said medium further comprises one or more compounds selected from formulae I-N and I-T
• wherein
• R1 is alkyl with 1 to 9 C-atoms, which is straight chain or branched, unsubstituted, mono- or poly-substituted by F, Cl or CN, and in which one or more CH2 groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NR01—, —SiR01R02—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, —CY01═CY02— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another,
• n is 0 or 1, and
• L1 is in each case independently of one another H or F;
• wherein said medium exhibits a blue phase, and
• wherein said medium further comprises one or more chiral dopants.