Patent ID: 7872725
Filing Date: 2011-01-18
Classification: G02F

Abstract:
1. A liquid crystal display device comprising: a first substrate and a second substrate which are arranged to face each other with a liquid crystal layer there between; a plurality of gate signal lines and a plurality of drain signal lines formed on the first substrate; a plurality of pixel regions defined by the drain signal lines and the plurality of gate signal lines; at least a thin film transistor formed in each of the plurality of pixel regions on the first substrate, the thin film transistor having a first semiconductor; columnar spacers formed on the second substrate; and second semiconductor layers formed on the plurality of gate signal lines, each second semiconductor layer formed under a corresponding columnar spacer in a corresponding pixel region, the second semiconductor layer being arranged apart from the first semiconductor layer in a plane view, the columnar spacers being formed to have a first columnar spacer which is connected to the first substrate side and a second columnar spacer which is not connected to the first substrate side, the first columnar spacer and the second columnar spacer being arranged on the gate signal lines, the first column spacer being arranged on the formation region of the second semiconductor laver, and the second column spacer being arranged on the non-formation region of the second semiconductor layer, wherein a difference in height between portions in which the second semiconductor layer is formed and portions in which the second semiconductor layer is not formed is equal to or more than 0.06 μm and equal to or less than 0.18 μm.