LIGHT-EMITTING DEVICE, BACKLIGHT DEVICE, AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light-emitting device that causes no deterioration of color purity and brightness in a display panel including a color filter.SOLUTION: A light-emitting device (100) includes a dielectric multilayer film (103) whose wavelength characteristics indicated by a transmittance/reflection rate of light is changed according to an incident angle of the light, and a diffusion lens (102) to set an incident angle of each of all lights that enter the dielectric multilayer film (103) from a white light LED (101) to 0°.SELECTED DRAWING: Figure 1