A liquid crystal display having a horizontal electric field includes:a thin film transistor array substrate, wherein the thin film transistor array substrate includes an effective display area having a gate line, a common line parallel to the gate line, a data line crossing and isolated from the gate line and the common line with a gate insulating film therebetween to define a pixel area, a thin film transistor formed at each crossing of the gate line and the data line, a passivasion film to protect the thin film transistor, a common electrode formed in the pixel area and connected to the common line and a pixel electrode connected to the thin film transistor, and a pad area having a gate pad having at least one conductive layer included in the gate line, a data pad having at least one conductive layer included in the data line, a common pad having at least one conductive layer included in the common line; a color filter array substrate combined with the thin film transistor array substrate to face each other; a driving integrated circuit mounted on the thin film transistor substrate to directly connect to one of the gate pad and the data pad; and a package mold material capsulating the pads and the driving integrated circuit.