A liquid crystal display. The liquid crystal display includes a color filter substrate and an array substrate, wherein at least one of the color filter substrate and the array substrate comprises polyimide having formula (I): wherein A and A′ are the same or different and comprise cycloaliphatic compounds or aromatic compounds, B and B′ are the same or different and comprise aromatic compounds, and x and y are 10˜10000, wherein at least one of A and A′ is a cycloaliphatic compound.