Patent ID: 8198632

Claim:
A thin film transistor substrate comprising: a plurality of gate wirings; a plurality of data wirings insulatedly crossing the gate wirings to define a plurality of pixels; a plurality of common voltage lines formed along edges of pixels and mutually connected in an extending direction of the gate wirings; and a plurality of common electrodes formed at the pixel such that the plurality of common electrodes partially overlap with the common voltage line and mutually connected in an extending direction of the data wirings; wherein each pixel comprises a display pixel positioned at a display area where an image is formed, and a dummy pixel positioned at a non-display area other than the display area, and each common electrode comprises a display part common electrode formed at the display pixel, a non-display part common electrode formed at the dummy pixel, and a common electrode connecting unit that connects the display part common electrode and the non-display part common electrode and the display part common electrodes, and wherein the display part common electrode comprises a first display part common electrode connected with the common voltage line via a common voltage contact hole, and a second display part common electrode extending along the data wiring from the first display part common electrode, and the non-display part common electrode comprises a first non-display part common electrode and a second non-display part common electrode which are respectively formed at both ends of the dummy pixel in an extending direction of the data wiring, and is connected with the common voltage line via the common voltage contact hole.