Multi-chip light emitting diode unit, and backlight unit and liquid crystal display device employing the same

摘要

A multi-chip light emitting diode unit, and a backlight unit and a liquid crystal display device employing the same, are provided. The multi-chip light emitting diode unit includes: a base; a plurality of light emitting elements which are arranged on the base and irradiate at least two wavelengths of light; and a cap which is provided at an upper side of each of the plurality of the light emitting elements, made of a material having a greater refractive index than an adjacent external medium, and which totally internally reflects the light emitted from the light emitting elements.