Composition, polarizer layer, laminate, and image displaying device

A composition comprising:

• at least a polymer liquid crystal compound;
• a dichroic material;
• a low-molecular-weight liquid crystal compound;
• and
• a polymer interface improver,
• wherein the polymer liquid crystal compound is a copolymer having a repeating unit (1) represented by Formula (1) and a repeating unit (4) represented by Formula (4),
• the low-molecular-weight liquid crystal compound is a compound represented by Formula (LC), and
• relationships represented by Expressions (11) to (13) and (20) to (21) are satisfied,
• in Formula (1), PC1 represents a main chain of the repeating unit represented by the Formula (P1-A), L1 represents a single bond or a divalent linking group, SP1 represents a spacer group, MG1 represents a mesogen group, and T1 represents a terminal group,
• in Formula (P1-A), “*” represents a bonding position with respect to L1 in Formula (1), and R11 represent a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms,
• in Formula (LC), SPL1 and SPL2 each independently represent a spacer group, ML represents a mesogen group, Q1 and Q2 each independently represent a crosslinkable group or a terminal group, and at least one of Q1 or Q2 represents a crosslinkable group,
• in Formula (4), PC4 represents a main chain of the repeating unit, L4 represents a single bond or a divalent linking group, SP4 represents a spacer group, T4 represents a crosslinkable group, and the number of atoms in a main chain of SP4 in Formula (4) is 31 or more and 70 or less,
• |log P(SP1)−log P(SPL1)|≤2.0 (11)
• |log P(MG1)−log P(SP1)|≥4.5 (12)
• |log P(ML)−log P(SPL1)|≥4.0 (13)
• in Formulae (11) to (13), log P(SP1) represents a log P value of SP1 in Formula (1), log P(MG1) represents a log P value of MG1 in Formula (1), log P(SPL1) represents a log P value of SPL1 in Formula (LC), and log P(ML) represents a log P value of ML in Formula (LC),
• D(SPL1)≥D(SPL2) (20)
• |D(SP1)−D(SPL1)|≤4.0Å (21)
• in Expressions (20) and (21), D(SPL1) represents a molecular length of SPL1 in Formula (LC), D(SPL2) represents a molecular length of SPL2 in Formula (LC), and D(SP1) represents a molecular length of SP1 in Formula (1).