Patent ID: 8425714

Claim:
A manufacturing method of a hermetic container, comprising: an assembling step of aligning a first glass substrate and a second glass substrate with each other through a circumferential sealing material having plural straight line portions and plural coupling portions for connecting the plural straight line portions, so as to define an internal space between the first glass substrate and the second glass substrate; and a sealing step of sealing the first glass substrate and the second glass substrate to each other by performing, to all the straight line portions, a scanning step of performing scanning with local heating light along a select straight line portion of the circumferential sealing material from a first coupling portion to a second coupling portion positioned at opposite ends of the select straight line portion to heat and melt the select straight line portion, wherein the sealing step is performed in a state that a local force is applied to the circumferential sealing material, an intensity of the local force applied to a first one of the opposite ends adjacent to another straight line portion later heated and melted is larger than that of the local force applied to the select straight line portion such that the first end adjacent to the another straight line portion later heated and melted is compressed in a thickness direction of the sealing material, wherein, in first and second straight line portions which stretch from each of the coupling portions, a width of the first straight line portion which is precedently heated and melted is W, the local force is applied in the sealing step to, in semicircular regions which are surrounded by a circumference of which the center is an intersection point of a first center line of the first straight line portion and a second center line of the second straight line portion and of which the radius is 2 W and the second center line, the semicircular region which is positioned at an inner side of the circumferential sealing material.