Patent ID: 8031318

Claim:
A liquid crystal display device, comprising: a wiring substrate; an opposing substrate opposite to the wiring substrate; a sealing member for bonding the wiring substrate to the opposing substrate; a liquid crystal filled in a space defined by the wiring substrate, the opposing substrate, and the sealing member, a plurality of scanning signal lines formed in a display area formed inside the sealing member; a plurality of display signal lines formed in the display area and crossing the scanning signal lines through an insulating film; and a common signal line formed outside the display area and extending along one end of the sealing member below the pattern of the sealing member; the scanning signal lines, the display signal lines, and common signal line being formed on the wiring substrate, and the common signal line including at least two conductive layers, the conductive layer that is not an uppermost conductive layer among the conductive layers of the common signal line extending up to the outside of an outer edge of the pattern of the sealing member at one end of the sealing member in which the common signal line extends, the uppermost conductive layer does not extend to the outside of an outer edge of the pattern of the sealing member at one end of the sealing member in which the common signal line extends, and the conductive layers extending up to the outside of the outer edge of the pattern of the sealing member being covered with two or more insulating films.