Organic EL image display device

An organic EL image display device comprising:

• a light emitting element substrate;
• and
• a circularly polarizing plate,
• wherein the light emitting element substrate includes a reflecting layer and an organic electroluminescent layer on the reflecting layer,
• the reflecting layer, the organic electroluminescent layer, and the circularly polarizing plate are arranged in this order,
• a polarization separation layer is provided between the organic electroluminescent layer and the circularly polarizing plate,
• the polarization separation layer includes a polarization separation region that reflects light of one polarization state in light emitted from the organic electroluminescent layer, and transmits light of another polarization state, and a visible light transmission region,
• the polarization separation region is formed of a layer formed by immobilizing a cholesteric liquid crystalline phase, and
• a positive C region-containing layer is provided between the organic electroluminescent layer and the circularly polarizing plate,
• wherein a retardation Rth(550) of a positive C region of the positive C region-containing layer in a film thickness direction at a wavelength of 550 nm is −250 nm to −70 nm;
• wherein the positive C region-containing layer includes a positive C region, and an absolute value of a retardation Rth(X) of the positive C region in a film thickness direction at an arbitrary wavelength X nm in a visible light region is an arbitrary value between an absolute value of a retardation Rth-Ch(X) of the polarization separation region in a film thickness direction at the wavelength X nm and an absolute value of a retardation Rth-T(X) of the visible light transmission region at the wavelength X nm.