Patent ID: 7851799

Claim:
A thin film transistor substrate comprising: a plurality of gate wirings; a plurality of data wirings insulatedly crossing the gate wirings; a plurality of pixels defined by the gate wirings and the data wirings to cross each other; 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, wherein the non-display part common electrode is formed to cover the entire surface of the dummy pixel, and a common electrode connecting unit that connects the display part common electrode with the non-display part common electrode.