Patent ID: 8080277

Claim:
A method of forming an organic compound layer of an organic EL element, the organic EL element comprising a flexible band substrate having thereon an anode layer comprising a first electrode, the organic compound layer, a cathode layer comprising a second electrode and a sealing layer or a sealing film, in that order, comprising the steps of: forming an anode layer comprising at least a first electrode on a flexible band substrate to form flexible band substrate A; winding flexible band substrate A on a core to form a roll of flexible band substrate A; supplying the roll of flexible band substrate A to a supplying section of a manufacturing apparatus; forming at least one organic compound layer on flexible band substrate A supplied from the supplying section using a wet coating device for applying an organic compound layer coating liquid on flexible band substrate A under an atmospheric pressure in a coating section comprised in a coating•drying section; removing an organic solvent in the organic compound layer under an atmospheric pressure in a drying section comprised in the coating•drying section to form flexible band substrate B; and winding flexible band substrate B on a core to form a roil of flexible band substrate B in a recovery section, wherein the roll of flexible band substrate B is manufactured by a manufacturing apparatus comprising the supplying section, the coating•drying section, and the recovery section; the coating•drying section comprises a coating section and a drying section to form a unit; and the manufacturing apparatus comprises at least one unit of the coating•drying section, wherein the organic compound layer is formed by removing the organic solvent in the organic compound layer by an air drying method in which an air ejecting rate is 0.1 to 5 m/s while a variation of the air ejecting rate in the width direction is 0.1 to 10%, in the drying section wherein the organic compound layer comprises at least a hole transport layer and an organic light emission layer.