| 摘要 |
PROBLEM TO BE SOLVED: To propose a method for manufacturing a rectangular glass frame while maintaining its flatness and hermeticity in order to obtain a glass frame for a panel display. SOLUTION: In the method for manufacturing the rectangular glass frame, the junctions 6 of sheet glass are irradiated with first and second laser beams L1 and L2 respectively from the rear surface side and front surface side of the junctions in a coaxial state while moving the irradiation positions of the respective laser beams at the same speed from the outer corner side to the inner corner side of the junctions 6, thereby heating the junctions to soften and joining them. The outputs, moving speeds and focal positions of the first and second laser beams L1 and L2 are adjusted according to the characteristics of the sheet glass to be joined, and hence the junctions 6 can be heated to soften and joined in the state of maintaining the flatness and the hermeticity. COPYRIGHT: (C)2004,JPO
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