Ink composition, layer using the same, and electrophoresis apparatus, and display device comprising the same

An ink composition, comprising:

• a semiconductor nanorod including at least one functional group each independently represented by one of Chemical Formula 1-1 to Chemical Formula 1-3;
• and
• a solvent:
• wherein in Chemical Formula 1-1 to Chemical Formula 1-3,
• R1 to R3 are each independently hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, or a substituted or unsubstituted C6 to C20 aryl group,
• L1 and L2 are each independently a substituted or unsubstituted C1 to C20 alkylene group,
• n is an integer from 0 to 20, and
• * represents a bond to the semiconductor nanorod.