Patent ID: 8405813
Filing Date: 2013-03-26
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 gate signal lines; at least a thin film transistor formed in each pixel region on the first substrate, each thin film transistor having a first semiconductor layer; a plurality of columnar spacers formed on the second substrate, the columnar spacers being formed on all of the gate signal lines in plan view; and second semiconductor layers formed on the gate signal lines and under the columnar spacers in the pixel regions, the second semiconductor layer being arranged apart from the first semiconductor layers in plan view, the second semiconductor layers not being arranged on the all of the gate signal lines, and wherein the columnar spacers have a first columnar spacer which is connected to a first substrate side of the second substrate and a second columnar spacer which is not connected to the first substrate side of the second substrate, the first columnar spacer and the second columnar spacer are arranged on the gate signal lines, the first column spacer is arranged on a formation region of the second semiconductor layers, and the second column spacer is arranged on a non-formation region of the second semiconductor layers.