Organic electroluminescence display device and method for producing the same

A method for producing an organic electroluminescent display device,

• the organic electroluminescent display device comprising:
• a component placement substrate having an organic electroluminescence element;
• and
• a circuit board having a driver circuit for the organic electroluminescence element, the component placement substrate and the circuit board being joined to each other;
• the method comprising the steps of:
• forming a transparent separation layer on a main surface of a supporting substrate;
• forming a light-scattering layer on the transparent separation layer;
• forming an organic electroluminescence element comprising a transparent electrode, a light-emitting layer, and a reflective electrode in this order on the light-scattering layer;
• disposing a conductor material on at least one of a surface on a side of the supporting substrate including the organic electroluminescence element and a main surface of the circuit board;
• pasting together the component placement substrate and the circuit board so that the reflective electrode and the electrode of the driver circuit are connected via the conductor material;
• applying a laser to part of the transparent separation layer from a side of a main surface of the supporting substrate opposite to the side including the organic electroluminescence element to modify the part of the transparent separation layer;
• and
• separating the supporting substrate from the modified part of the transparent separation layer.