Backlight unit and display device including the same

A backlight unit including a central area and a peripheral area disposed outside the central area, the backlight unit comprising:

• a bottom chassis;
• a plurality of light sources disposed on a surface of the bottom chassis;
• a reflective layer disposed on the surface of the bottom chassis, wherein a plurality of light source insertion holes and a plurality of opening patterns are defined through the reflective layer;
• a light correction material layer disposed between the bottom chassis and the reflective layer in the peripheral area;
• and
• a substrate disposed between the bottom chassis and the reflective layer,
• wherein the light source insertion holes expose the light sources, respectively,
• wherein the opening patterns are disposed in the peripheral area to expose at least a portion of the light correction material layer in a thickness direction,
• wherein the substrate includes a first surface facing the reflective layer and a second surface opposite to the first surface,
• wherein the light sources are disposed on the first surface of the substrate,
• wherein the light correction material layer is interposed between the bottom chassis and the substrate, and
• wherein the substrate includes a light transmissive material.

A display device comprising:

• a backlight unit including a central area and a peripheral area surrounding the central area, the backlight unit comprising:
• a bottom chassis,
• a light correction material layer disposed on a surface of the bottom chassis in the peripheral area,
• a plurality of light sources disposed on the surface of the bottom chassis, and
• a reflective layer disposed on the light correction material layer, wherein a plurality of light source insertion holes and a plurality of opening patterns spaced apart from the light source insertion holes are defined through the reflective layer;
• and
• a display panel disposed above the backlight unit,
• wherein the light source insertion holes expose the light sources, respectively,
• wherein the opening patterns are disposed in the peripheral area to expose at least a portion of the light correction material layer in a thickness direction,
• wherein each of the light sources emits light in a first wavelength range, and
• wherein the light correction material layer includes a material which primarily absorbs the light in the first wavelength range or a material which converts light of the first wavelength range into light in a second wavelength range different from the first wavelength range.