The present invention relates to an array substrate for a liquid crystal display (LCD) and a manufacturing method thereof. The array substrate comprises gate lines crossing data lines on a transparent substrate to define pixel areas; thin film transistors connected to a gate line and a data line; pixel electrodes overlapping the gate and data lines, the pixel electrodes being connected to one of the thin film transistors through a contact hole, and stretched over two adjacent pixel areas to form an electric field; and storage electrodes overlapping with the gate lines, connected to a pixel electrode through a contact hole, wherein the storage electrodes maintain an intensity of the electric field formed by the pixel electrodes at a level equal to or higher than a predetermined level.