Light source device and display device

摘要

A light source device capable of suppressing generation of color unevenness, and a display device using the same are provided. The light source device 1 is provided with a plurality of excitation light sources 11 which are arranged at prescribed intervals D on a substrate 10 and emit blue light, and a phosphor layer 12 which converts part of the blue light emitted from the excitation light sources into red light and green light and arranged at a distance from the excitation light sources 11 to oppose the substrate 10. Fluctuation of intensity of each color light due to nonuniform application of the phosphor layer is difficult to occur as compared with a configuration in the past where the phosphor layer is formed adjacent to each excitation light source.

主权项

1. A light source device comprising:
a light emitting section to output color light in a first wavelength region; a color conversion layer provided to be opposed to the light emitting section at a distance to convert a first part of the color light in the first wavelength region from the light emitting section into second color light in a second wavelength region, a wavelength of the second wavelength region being longer than that of the first wavelength region, and to output the second color light in the second wavelength region and to transmit a second part of the color light in the first wavelength region; wherein the light emitting section has a plurality of point sources of light arranged at intervals on a substrate, and the color conversion layer extends over an entire region of the substrate where the plurality of point sources of light are arranged; wherein the plurality of point sources of light are arranged on a plane, and the color conversion layer is arranged so as to be substantially parallel to the plane; wherein a color conversion efficiency of the color conversion layer for exiting light with respect to incident light from the plurality of point sources of light is uniform independent of positions within a region corresponding to the plurality of point sources of light; wherein an intensity of the first color light and the second color light output from the color conversion layer is uniform independent of an exit angle; wherein a light path length within the color conversion layer of light passing through the color conversion layer is uniform independent of the exit angle; and wherein a light exit surface of the color conversion layer in each region corresponding to each of the plurality of point sources of light is formed as a convex curved surface.