Process for producing organic electroluminescent element and organic electroluminescent display device

A method of producing an organic electroluminescent element comprising a substrate having thereon:

• a first electrode;
• an organic compound layer;
• a second electrode;
• and
• a sealing layer,
• the method comprising the sequential steps of:
• forming the first electrode on the substrate;
• supplying the substrate from a first roll core upon which the substrate had been wound;
• supplying a masking member from a second roll core upon which the masking member had been wound;
• laminating the masking member onto a region of the substrate on which the organic compound layer is prevented from forming, provided that the masking member has an adhesion force of from 4.1 to 6.6 N/25 mm;
• forming the organic layer compound on the entire surface of the masked substrate;
• forming the second electrode;
• forming the sealing layer;
• and
• separating the masking member from the masked substrate on which the first electrode and organic compound layer have been formed.

A method of producing an organic electroluminescent element comprising the sequential steps of:

• forming a first electrode on a substrate;
• forming an organic compound layer including a light-emitting layer;
• forming a second electrode;
• and
• forming a sealing layer,
• wherein the step of forming the organic compound layer comprises the steps of:
• supplying the substrate from a first roll core upon which the substrate had been wound;
• supplying a masking member from a second roll core upon which the masking member had been wound;
• laminating the masking member onto a region of the substrate on which the organic compound layer is prohibited from forming, provided that the masking member has an adhesive force of from 4.1 to 6.6 N/25 mm;
• forming the organic compound layer on the substrate;
• separating the masking member from the masked substrate on which the first electrode and organic compound layer has been formed.