US Patent 7435631 Liquid crystal display device and method of manufacturing the same

An LCD and a method of manufacturing the same using at most six mask processes are provided. An active layer and a storage electrode are simultaneously formed by diffraction exposure. Multiple ion implantations are performed using a photoresist or the gate electrode to mask different areas of an underlying semiconductor. Source and drain electrodes and a pixel electrode are simultaneously formed by diffraction exposure. First and second connection electrodes that lower the contact resistance between the drain electrode and the active layer are formed by a lift-off process.