A method for producing an organic EL panel includes an application step of applying a filler, a desiccant, a sealant and a fixing agent to positions on a encapsulation substrate opposing the position of an element, a positioning step of positioning an element substrate and the encapsulation substrate, a heating step of heating the encapsulation substrate, a defoaming step of removing gases incorporated within the filler and the like, a sticking substrates step of sticking the element substrate and the encapsulation substrate using a pair of surface plates, a gas introduction step of returning the periphery around the pressure welded element substrate and encapsulation substrate to an atmospheric pressure environment, a provisional fixing step of irradiating ultraviolet rays onto the fixing agent, and a seal curing step of irradiating ultraviolet rays onto the sealant, thereby curing the sealant.