Array substrate for liquid crystal display device and method of fabricating the same
A liquid crystal display device includes an array substrate and a color filter substrate, a plurality of gate lines and a plurality of data lines formed on the array substrate such that the gate lines and the data lines intersect each other to define a plurality of pixel regions, a plurality of thin film transistors formed at respective intersections of the gate lines and the data lines, a liquid crystal layer interposed between the array and color filter substrates, and a plurality of repair patterns formed on the first substrate. Each of the plurality of the repair patterns crosses a corresponding one of the data lines, and is along and adjacent to a corresponding one of the gate lines, such that the repair pattern includes protruding ends that protrude from the corresponding data line to repair a defect on the pixel regions.
1. A method of repairing an array substrate having a defect for a liquid crystal display device, comprising:
forming a gate line along a substrate and a repair pattern having a bar shape on the substrate, the repair pattern parallel to and spaced apart from the gate line;
forming a data line crossing the gate line and the repair pattern, pixel regions in a matrix shape being defined by crossing the gate and data lines;
forming thin film transistors in the pixel regions;
forming pixel electrodes in the respective pixel regions and connected to the thin film transistors;
irradiating a first laser beam onto first portions positioned around an overlapped portion of the gate and data lines such that the overlapped portion is electrically disconnected from the gate line when an electrical short is generated at the overlapped portion;
irradiating a second laser beam onto second portions positioned adjacent to the first portions and the repair pattern to form first grooves exposing second portions and second grooves exposing the ends of the repair pattern;
irradiating a third laser beam to form a first contact pattern in each of the first grooves and a second contact pattern in each of the second grooves by a chemical vapor deposition (CVD) repair apparatus; and
forming a connection pattern connecting the first contact pattern with the second contact pattern by the CVD repair apparatus.
2. The method according to claim 1 , further comprising irradiating the first laser beam onto a portion of the thin film transistor such that the pixel electrode is electrically disconnect from the thin film transistor.
3. The method according to claim 1 , further comprising irradiating the first laser beam onto the pixel electrode in each of the pixel regions along a perimeter of the connection pattern such that one portion of the pixel electrode is electrically disconnected from the other portion of the pixel electrode.