| 摘要 |
PURPOSE:To provide a simple control method of determining the angular position of a glass substrate for a liquid crystal display when connecting electronic components to the substrate. CONSTITUTION:When a substrate 1 is placed on a stage 14, one registration mark 2a on the substrate becomes coincident with the center of rotation of the stage 14 according to pins 40a, 40b, and 40c for positioning. A camera 41 detects the positions of two registration marks 2a and 2b. The results of detection are used to calculate how many degrees the stage should be turned to orient the substrate correctly, and the stage is turned accordingly. Since the stage is turned about the mark 2a whose position is detected, it is possible to easily determine the angle of rotation required for the stage. |
