LIGHT TRANSMITTING SUBSTRATE FOR ORGANIC EL PANEL, METHOD FOR CONTROLLING REFRACTIVE INDEX ANISOTROPY OF LIGHT TRANSMITTING SUBSTRATE FOR ORGANIC EL PANEL, METHOD FOR MANUFACTURING LIGHT TRANSMITTING SUBSTRATE FOR ORGANIC EL PANEL, ORGANIC EL PANEL, AND ORGANIC EL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light transmitting substrate for an organic EL panel, capable of preventing or reducing the occurrence of a color shift and coloration in an organic EL panel.SOLUTION: A light transmitting substrate 201 for an organic EL panel of the present invention is formed of resins 203 and 204, and has substantially optical isotropy in the in-plane direction and thickness direction of a substrate.