Method of manufacturing EL display device
View Patent ↗A method of manufacturing an EL display device having a panel part is such that a constituent element of the panel part is formed through film formation in a vacuum atmosphere. After the constituent element of the panel part has been formed on a substrate in the vacuum atmosphere, the post-film-formation substrate is placed on standby during transporting the substrate from a place in the vacuum atmosphere to a place in an atmospheric-pressure atmosphere. The placing the substrate on standby includes a first intake period and a second intake period. During the first intake period, an intake gas is gradually introduced to change the atmosphere, from the first vacuum atmosphere to the second vacuum atmosphere that exhibits a lower degree of vacuum than that of the first vacuum atmosphere. During the second intake period, the intake gas is introduced to change the atmosphere, from the second vacuum atmosphere to the atmospheric-pressure atmosphere. The first period is set to be longer in time than the second period.
1. A method of manufacturing an EL display device having a panel part, the panel part comprising: a light emitting part in which a plurality of pixels are arrayed; and a thin-film transistor array device to control light emission of the light emitting part, the method comprising the steps of:
forming a constituent element of the panel part on a substrate, through film formation in a vacuum atmosphere; and
placing the post-film-formation substrate on standby in a load lock chamber, after the step of forming the constituent element, during transporting the post-film-formation substrate from a place in the vacuum atmosphere to a place in an atmospheric-pressure atmosphere,
wherein the step of placing the post-film-formation substrate on standby includes a first intake period and a second intake period, the first intake period being longer in time than the second intake period, the first intake period being for gradually introducing an intake gas to change a first vacuum atmosphere into a second vacuum atmosphere lower in degree of vacuum than the first vacuum atmosphere, the second intake period being for introducing the intake gas to change the second vacuum atmosphere into the atmospheric-pressure atmosphere; and
a rate of change of pressure in the load lock chamber during the first intake period is less than the rate of change of pressure in the load lock chamber during the second intake period.
2. The method of manufacturing the EL display device according to claim 1 ,
wherein the step of forming the constituent element configuring the panel part, through the film formation in the vacuum atmosphere, is performed in film-forming equipment;
the step of placing the post-film-formation substrate on standby is performed in the load lock chamber communicating with the film-forming equipment; and
the step of placing the post-film-formation substrate on standby includes the steps of:
introducing a dry gas from an intake line disposed in an upper part of the load lock chamber; and
exhausting the dry gas from an exhaust line disposed in a lower part of the load lock chamber.