WAVELENGTH CONVERSION SUBSTRATE, LIGHT-EMITTING DEVICE AND DISPLAY DEVICE COMPRISING THE SAME, LIGHTING DEVICE, AND ELECTRONIC APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a wavelength conversion substrate, a light-emitting device and a display device comprising this, a lighting device, and an electronic apparatus that prevent light extraction efficiency of light emitted at the front side of the light-emitting device from being reduced due to part of emitted light being emitted to an excitation light source side in a wavelength conversion layer included in the light-emitting device adopting a blue light color conversion method.SOLUTION: A wavelength conversion substrate 20 includes a transparent substrate, and a wavelength conversion layer 18 provided on one surface of the transparent substrate. The wavelength conversion layer 18 includes a wavelength conversion material (A) and a polymer (B). The wavelength conversion layer 18 includes at least two regions where the concentration of the wavelength conversion material (A) is different along the thickness direction.SELECTED DRAWING: Figure 1