Patent ID: 7423701
Filing Date: 2008-09-09
Classification: G02F

Abstract:
1. A liquid crystal display device comprising: liquid crystal sandwiched between a first substrate and a second substrate which face each other in an opposed manner; a plurality of gate lines which extend in the first direction and are arranged parallel to each other; a plurality of drain lines which extend in the second direction which crosses the gate lines and are arranged parallel to each other; a plurality of pixel regions which are defined among the gate lines and the drain lines; a plurality of switching elements which are arranged at crossing portions of the gate lines and the drain lines; and pixel electrodes which are driven by the switching elements are formed on an inner surface of the first substrate in the pixel regions, wherein an electrode forming layer includes the gate lines, the drain lines, the switching elements and the pixel electrodes, a reference electrode layer is formed on the pixel regions and arranged between the first substrate and the electrode forming layer with a first insulation layer between the reference electrode layer and the electrode forming layer, and the electrode forming layer includes a gate insulation layer, a passivation layer and the pixel electrode in order over the first insulation layer and further includes a capacitive electrode layer which is connected to the pixel electrodes, the capacitive electrode layer is formed between the first insulation layer and the passivation layer, the capacitive electrode layer is further formed to not overlap the drain line and the gate line, a second capacitive electrode layer is formed over the first insulation layer, and the second capacitive electrode layer is connected to the reference electrode layer via through holes which penetrate the first insulation layer, and holding capacities of the pixels are formed among the pixel electrodes, the reference electrode layer and the capacitive electrode layer.