To provide a method for fusing a glass member by which an area including both the initiation point of laser-beam irradiation and the ending point thereof can be inhibited from suffering residual stress.
In fusing a glass member 4 to a glass member 5 by irradiating a glass layer 3 with a laser beam L2 along a region R to be fused, wherein a crystallized area 8 formed in the glass layer 3 is taken as the irradiation-initiating point and the irradiation-ending point. Since the crystallized area 8 exhibits a laser absorptance lower than that of the glass layer 3, the glass layer 3 is gradually heated when the laser beam L2 is moved along the region R to be fused from the irradiation-initiating point, while the glass layer 3 is gradually cooled when the laser beam L2 is moved along the region R to be fused to the irradiation-ending point. By virtue of the above constitution, the area including both the initiation point of laser-beam L2 irradiation and the ending point thereof can be inhibited from suffering residual stress.
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Shiro Terasaki
Satoru Ishida
Kenichi Shibayama