Array substrate and repairing method thereof

A repairing method for an array substrate, wherein the array substrate comprises adjacent two level gate driver on array unit circuits, an output terminal of the Nth level gate driver on array unit circuit is connected to a Nth level gate line, an output terminal of the N+1th level gate driver on array unit circuit is connected to a N+1th level gate line, wherein the repairing method comprises:

• disposing a repairing structure between the Nth level gate line and the N+1th level gate line;
• and
• turning on the Nth level gate line and the N+1th level gate line by melting the repairing structure, and cutting off a connection of an output terminal of a damaged gate driver on array unit circuit and a current level gate line simultaneously, when the Nth level gate driver on array unit circuit or the N+1th level gate driver on array unit circuit is damaged;
• wherein the disposing of the repairing structure specifically comprises:
• forming a first metal block and a second metal block separated from each other, and connecting the first metal block with the Nth level gate line, and connecting the second metal block with the N+1th level gate line;
• forming an interlayer medium on the first metal block and the second metal block, and forming a connection hole in the interlayer dielectric;
• and
• forming a third metal block on the interlayer medium, and connecting the third metal block to the first metal block by forming a connection hole, to form an overlapping structure with the second metal block, the overlapping structure is configured to be melted when the Nth level gate driver on array unit circuit or the N+1th level gate driver on array unit circuit is damaged and to turn on the Nth level gate line and the N+1th level gate line.