Backlight unit and display device

A display device comprising:

• a display panel which displays an image with light;
• a light source which generates the light;
• and
• a light guide plate which guides the light from the light source towards the display panel, the light guide plate comprising:
• an upper surface facing the display panel,
• a lower surface opposing the upper surface, comprising:
• a prism pattern area provided in plurality, and
• a linear pattern area provided between prism pattern areas, and
• a light incident surface facing the light source,
• wherein
• the prism pattern area comprises a prism provided in plurality arranged along a first direction perpendicular to the light incident surface,
• the linear pattern area comprises a linear pattern provided in plurality arranged along a second direction parallel to the light incident surface,
• within the prism pattern area,
• a length of each of the prisms extends in the second direction parallel to the light incident surface, and
• lengths of each of the prisms increase as a distance along the first direction from the light incident surface increases,
• within the linear pattern area between prism pattern areas, the plurality of linear patterns are spaced apart from each other along the second direction, and
• within a plane defined by the first and second directions, each of adjacent linear patterns spaced apart from each other is disposed inclined with respect to the light incident surface of the light guide plate.