Method and apparatus for inspecting and repairing liquid crystal display device
View Patent ↗An apparatus of inspecting a liquid crystal display device includes a magnetic sensor scanning a signal line pattern on a substrate to detect a defective position of the signal line pattern, a camera imaging the signal line pattern detected by the magnetic sensor, an inspecting jig contacting a probe pin with the signal line pattern to determine the existence of defective in the signal line pattern, a transferring tool system transferring at least one of the substrate, the magnetic sensor and the camera in a two-axis direction, and a controller controlling the magnetic sensor, the camera, the inspecting jig and the transferring tool system.
1. A method for inspecting a liquid crystal display device, comprising:
scanning a signal line pattern having a gate line, a common voltage line and a data line across the gate and common voltage lines on a substrate along a width direction across the gate line and the common voltage line using a magnetic sensor to detect a defective position of a short defect, and open defect or an interlayer short defect in the signal line pattern;
moving a line camera to the defective position detected by the magnetic sensor along the signal line pattern in vertical and horizontal directions and imaging the defection position detected by the magnetic sensor; and
generating coordinate data of the defective position based on a movement distance of the line camera.
2. The method according to claim 1 , wherein one end of the gate line, the common voltage line and the data line of the signal line pattern is shorted by a shorting line, and the other end of the gate line, the common voltage line and the data line is electrically insulated.
3. A liquid crystal display device manufactured by the method according to claim 1 , comprising:
a second substrate bonded to the substrate with a predetermined space therebetween; and
a liquid crystal layer disposed between the substrates.