A manufacturing method of an organic EL display device according to an embodiment of the present invention includes: disposing a first organic substrate having flexibility on a glass substrate; disposing a barrier layer on the first organic substrate; disposing a second organic substrate having flexibility on the barrier layer such that a thickness of a terminal section area is thinner than a thickness of a pixel section area, or at least a part of the terminal section area is not covered; disposing a pixel control section on the terminal section area of the second organic substrate and a pixel generating section on the pixel section area, respectively; disposing a circuit section at least on the terminal section area, the circuit section having a thin film transistor, wherein the circuit section is formed directly on the second organic substrate.