The manufacturing method of the board substrate for organic electroluminescent devices, the organic electroluminescent device, and the board substrate for organic electroluminescent devices.

摘要

As the substrate 1 for an organic EL device provided with the light transmitting plate, the high refractive index layer 4, and the transparent conductive layer 5 in the thickness direction in this order, the transparent conductive layer 5 is at least the first region R1. ) And the concave groove 6 separated into the second region R2, the thickness of the transparent conductive layer 5 is t1 (μm), and the minimum width of the concave groove 6 is w1 (μm). When the maximum depth of the concave groove portion 6 with respect to the surface 5a on the side opposite to the high refractive index layer 4 of the transparent conductive layer 5 is d1 (μm), t1 ≦ d1 and d1 / {(w1) ^0.5 } 0.1 is established.