Display device and manufacturing method therefor

A display device comprising:

• a liquid crystal panel;
• and
• a light source plate disposed behind the liquid crystal panel configured to provide the liquid crystal panel with light,
• wherein the light source plate includes:
• a printed circuit board (PCB) having a mounting surface;
• a light emitting diode (LED) chip mounted on the mounting surface;
• a transparent resin disposed on the LED chip to substantially surround the LED chip;
• a light conversion layer configured to convert a wavelength of light emitted from the LED chip, the light conversion layer substantially surrounding an outer surface of the transparent resin;
• a barrier layer covering the light conversion layer from an outside;
• and
• an auxiliary light conversion layer disposed on the mounting surface adjacent to the LED chip, wherein a portion of the auxiliary light conversion layer above the mounting surface is substantially surrounded by the transparent resin and the auxiliary light conversion layer is configured to convert a wavelength of light emitted from the LED chip.