Manufacturing method of hermetic container

A manufacturing method of a hermetic container, which includes sealing a first substrate and a frame body comprising a part of the hermetic container, the method comprising:

• an assembling step which includes a first step of arranging the frame body so as to have at least one separation portion having mutually facing two surfaces being separated from each other and of arranging a first sealing material between the facing two surfaces, and a second step of assembling the first substrate and the frame body so that a second sealing material having a frame shape along the frame body is arranged between the first substrate and the frame body;
• and
• a sealing step which includes sealing the frame body to the first substrate by scanning local heating light along the second sealing material and heating and melting the second sealing material, and sealing the separation portion of the frame body by irradiating the local heating light to the first sealing material provided in the separation portion,
• wherein, in the sealing step, order of the scanning of the local heating light is determined so that, when the local heating light is scanned along an unsealed portion of the second sealing material toward an already-sealed portion of the second sealing material, the separation portion of an unsealed state is set between a downstream end of the scanning and the already-sealed portion, and after the local heating light is scanned up to the downstream end, the local heating light is irradiated to the separation portion of the unsealed state between the already-sealed portion and the downstream end, wherein
• in the assembling step, the frame body is arranged between the first substrate and a second substrate so that a third sealing material having a frame shape alone the frame member is arranged between the second substrate different from the first substrate and the frame body,
• in the sealing step, the local heating light is irradiated simultaneously to the second sealing material and the third sealing material to seal the frame body also to the second substrate, and
• in the assembling step, the third sealing material is arranged so as to produce a portion, which is not overlapped with the second sealing material observed from an irradiation source of the local heating light in the sealing step.