Patent ID: 8057273

Claim:
A method for producing an airtight container including a first substrate having an electron-emitting element disposed on a first surface thereof, a light-transmitting second substrate facing the first substrate and a frame member interposed between the first substrate and the second substrate, the first substrate, the second substrate, and the frame member forming an inner space in which the electron-emitting element is located, the frame member being capable of transmitting light, the method comprising: preparing an assembly comprising the first substrate and the frame member mounted on the first surface of the first substrate outside an area where the electron-emitting element is formed, by: temporarily fixing the frame member to the first substrate by bringing the first substrate into contact with the frame member via a second joining member and pushing the frame member using a light-transmitting pushing plate; melting the second joining member by irradiating the second joining member with a laser beam transmitted through the pushing plate and the frame member; solidifying the melted second joining member; and removing the pushing plate; forming a temporary assembly comprising the assembly and the second substrate by bringing the second substrate into contact with the frame member via a first joining member; melting the first joining member by irradiating the first joining member with a laser beam transmitted through the second substrate of the temporary assembly; and solidifying the melted first joining member, wherein the laser beam is applied onto the first joining member such that an incident direction of the laser beam at an irradiation position on the first joining member does not include components toward the interior of the frame member while the laser beam moves relative to the temporary assembly during melting of the first joining member, and the laser beam is applied onto the second joining member such that an incident direction of the laser beam at an irradiation position on the second joining member does not include components toward the interior of the frame member while the laser beam moves relative to the first substrate during melting of the second joining member.