| 摘要 |
At least when an upper glass substrate 3 held by an upper retention head 10 and a lower glass substrate 4 held by a lower retention head 11 are abutted on each other through a sealing material 5, air cylinders 25, 25 apply a lifting force balancing with a dead weight of the upper retention head 10 to the upper retention head 10 to cancel its dead weight. In this state, the upper glass substrate 3 and the lower glass substrate 4 are abutted on each other through the sealing material 5. |
