Liquid crystal display device having common electrodes with reduced resistance
View Patent ↗A liquid crystal display (LCD) device includes a unit pixel defined by a gate line formed on a substrate and a data line crossing the gate line, a switching device formed in the unit pixel, a common electrode line formed parallel to the gate line, the common electrode line including a first transparent electrode layer and a first conductive layer, a common electrode having a conductive portion and a light transmitting portion formed within the unit pixel and connected to the common electrode line, the conductive portion formed along a periphery of the common electrode including a second transparent electrode layer and a second conductive layer, and the light transmitting portion including a third transparent electrode layer disposed in a middle portion of the common electrode includes a third transparent electrode layer, and a pixel electrode having a slit region arranged to face the common electrode.
1. A liquid crystal display (LCD) device, comprising:
a unit pixel defined by a gate line formed on a substrate and a data line crossing the gate line;
a switching device formed in the unit pixel;
a common electrode line formed parallel to the gate line, the common electrode line including a first transparent electrode layer and a first conductive layer;
a common electrode having a conductive portion and a light transmitting portion formed within the unit pixel and connected to the common electrode line, the conductive portion formed along a periphery of the common electrode including a second transparent electrode layer and a second conductive layer, and the light transmitting portion including a third transparent electrode layer disposed in a middle portion of the common electrode includes a third transparent electrode layer;
a conductive path formed on the common electrode in a direction of the data line and electrically connecting the common electrodes of neighboring unit pixels, wherein the conductive path comprises a first conductive path formed of the same conductive material as a material of the data line and a second conductive path formed of the same material as that of the pixel electrode; and
a pixel electrode having a slit region arranged to face the common electrode.
2. The LCD device of claim 1 , wherein the conductive portion is connected to the common electrode line.
3. The LCD device of claim 1 , further comprising a connection line formed parallel to the gate line and electrically connecting the common electrodes.
4. The LCD device of claim 3 , wherein the connection line is connected to the conductive portion.
5. The LCD device of claim 1 , wherein the first, second, and third transparent electrode layers are formed from the same transparent electrode layer.
6. The LCD device of claim 1 , wherein the first and second conductive layers are formed from the same conductive layer.
7. The LCD device of claim 1 , wherein the gate line is formed of the first transparent electrode layer and the first conductive layer.