Patent ID: 8179494

Claim:
An array substrate of a liquid crystal display, comprising: a first signal line comprising a front portion, a display region portion and an end portion; a second signal line configured to cross with the first signal line; and a repair line positioned outside a display region of the array substrate, the repair line comprising a front repair line portion, an end repair line portion and an intermediate repair line portion electrically connecting the front repair line portion and the end repair line portion, the end repair line portion comprising a portion which is electrically isolated from the end portion of the first signal line when the repair line has not been used to repair a defect in the first signal line and is electrically connected with the end portion of the first signal line when the repair line is used to repair a defect in the first signal line, wherein the front repair line portion comprises a first signal connection line and an external line, the first signal connection line configured to be electrically isolated from the front portion of the first signal line when the repair line has not been used to repair a defect in the first signal line and to be electrically connected with the front portion of the first signal line when the repair line is used to repair a defect in the first signal line, the external line being a portion that is electrically connected with the intermediate repair line portion, and the first signal connection line being electrically isolated from the external line when the repair line has not been used to repair a defect in the first signal line, and wherein the intermediate repair line portion and the end repair line portion at least each comprises a disconnection portion.