A liquid crystal display is disclosed. The liquid crystal display comprises a gate line, a data line, a first common line and a continuous second common line. The gate line is disposed on a substrate, and the data line intersects the gate line. The first common line is parallel with the gate line and the second common line intersects through the gate line. By this invention, the first common lines and second common lines of pixels can form a reticular structure for reducing RC delay effect of the common line.