Display device

A display device, comprising:

• a display panel;
• a frame positioned at a back of the display panel and having a bottom area and a sidewall area extended from the bottom area;
• a substrate located on the bottom area of the frame;
• a reflection sheet located on the substrate and having a hole;
• a light source located on the substrate and disposed in the hole;
• a lens located on the light source and comprising a first surface, a second surface forming a bottom surface of the lens and facing the first surface, a third surface connecting the first surface and the second surface;
• and
• a plurality of lens extension parts extended outwardly from the third surface,
• wherein the plurality of lens extension parts comprise at least one first lens extension part that overlaps at least a portion of the reflection sheet,
• wherein a bottom surface of the at least one first lens extension part is substantially the same level as the second surface of the lens,
• wherein the second surface of the lens comprises a concave part facing the light source,
• wherein a mounting part of the second surface protrudes from the second surface between the concave part and the plurality of lens extension parts, and
• wherein a height of the mounting part is less than a height of the at least one first lens extension part.