In an array substrate and a method of manufacturing the array substrate, an array substrate includes a first switching element (Qa), a second switching element (Qb), a third switching element (Qc) and a fourth switching element (Qd). The first switching element (Qa) is electrically connected to a first data line (Dj). The second switching element (Qb) is electrically connected to a second data line (Dj+1) adjacent to the first data line (Dj). The third switching element (Qc) is electrically connected to a data power line (-Dj+½) interposed between the first (Dj) and second data lines (Dj+1). The fourth switching element (Qd) is electrically connected to a gate power line (+Dj+½) receiving a voltage having different polarity from a voltage applied to the data power line (-Dj+½) . Therefore, light transmittance, opening ratio and display quality are improved.