LIGHT EMITTING DEVICE AND ILLUMINATOR EMPLOYING IT, BACK LIGHT FOR DISPLAY, AND DISPLAY

摘要

In order to enhance emission efficiency and color rendering properties, a light emitting device is provided with a light source (3), a first light emitting part (4) containing a light emitting substance for emitting light containing a component of longer wavelength than that of a light emitted from the light source (3) when it is excited with light emitted therefrom, a second light emitting part (5) containing a light emitting substance for emitting light containing a component of longer wavelength than that of a light emitted from the first light emitting part (4) when it is excited with light emitted from the light source (3) and the first light emitting part (4), and a light exit plane (1A) for emitting light emitted from the light source (3), the first light emitting part (4) and the second light emitting part (5). The first light emitting part (4) and the second light emitting part (5) are opened on the light exit plane (1A) and the area of boundary plane (X