Translucent substrate for organic EL panel, control method of refractive index anisotropy of translucent substrate for organic EL panel, production method of translucent substrate for organic EL panel, organic EL panel, organic EL device

摘要

Disclosed is an organic EL panel translucent substrate that can prevent or reduce the color gap/coloring of an organic EL panel. In order to achieve the above object, organic EL panel translucent substrate 201 is formed of resins 203 and 204 and is substantially optically isotropic in its in-plane direction and thickness direction.