A liquid crystal display is provided, including a first insulating substrate; a second insulating substrate facing the first insulating substrate; a pixel electrode disposed on the first insulating substrate; a common electrode disposed on the first insulating substrate or the second insulating substrate; a first alignment layer disposed on the first insulating substrate; a second alignment layer disposed on the second insulating substrate; and a liquid crystal layer disposed between the first insulating substrate and the second insulating substrate, in which at least one of the first alignment layer and the second alignment layer include a main chain and a plurality of side chains which are connected to the main chain, and at least one of the plurality of side chains includes a reactive mesogen including a vertical expression group and at least two photoreactor groups connected to the vertical expression group.