Patent ID: 8500506

Claim:
A method of manufacturing a flat display device using a sealing apparatus that attaches a first substrate and a second substrate with an attachment member and has a halogen lamp, the method comprising: disposing the attachment member between the first substrate and the second substrate; attaching the first substrate and the second substrate to each other; seating the attached first substrate and second substrate on a stage of the sealing apparatus; converging the light irradiated from the halogen lamp onto the attachment member in a manner that the light is irradiated to the attachment member in a whole section area of the first substrate and the second substrate in one direction along a surface of the second substrate at the same time; irradiating light to the attachment member while moving the halogen lamp in a direction crossing the one direction; and hardening the attachment member melted by the irradiated light to attach the first substrate and the second substrate to each other, wherein the light is irradiated to the attachment member while the light passing through the first substrate and the second substrate is reflected by a reflecting plate disposed between the first substrate and the stage.