Backlight unit and liquid crystal display including the same

A display device of comprising:

• a display panel having a plurality of electrodes and pixels;
• and
• an edge type backlight provided adjacent to the display panel, the backlight having
• a plurality of optical sheets adjacent to the display panel;
• a light guide panel having at least one light incident area to receive light from a first direction and a light emitting area to emit light received through the light incident area in a second direction towards the plurality of optical sheets, the first and second directions being different directions;
• at least one light source, at least one incident area of the light guide panel being adjacent to at least one light source to receive light output;
• a reflector adjacent to the light guide panel to reflect light towards the second direction;
• and
• a bottom cover including a plate, the plate provided adjacent to the reflector and having a prescribed length in the first direction and a prescribed width in a third direction,
• the plate further including at least one post having a first prescribed height and
• the reflector and the light guide panel having at least one opening having a second prescribed height to receive the at least one post,
• wherein the at least one light source comprises a first LED assembly having a plurality of first light emitting diodes provided on a first substrate and arranged in the third direction,
• the first LED assembly further including a first support plate extending in the first direction and provided adjacent to the first substrate, the first support plate including a first opening and a second opening,
• the at least one post including a first post and at least one of a second post, a third post or a fourth post, the first post located closest in the first direction to the plurality of first light emitting diodes,
• the at least one peg including a first peg,
• the first and second openings fitted over the first post and the first peg, and
• the at least one opening of the reflector and the light guide panel includes a first slot and at least one of a second slot, a third slot or a fourth slot.

A display device comprising:

• a display panel having a plurality of electrodes and pixels;
• and
• a backlight provided adjacent to the display panel, the backlight having
• a plurality of optical sheets adjacent to the display panel;
• a light guide panel having at least one light incident area to receive light from a first direction and a light emitting area to emit light received through the light incident area in a second direction towards the plurality of optical sheets, the first and second directions being different directions;
• at least one light source, at least one incident area of the light guide panel being adjacent to at least one light source to receive light output;
• a reflector adjacent to the light guide panel to reflect light towards the second direction;
• and
• a bottom cover including a plate, the plate provided adjacent to the reflector and having a prescribed length in the first direction and a prescribed width in a third direction,
• the plate further including at least one post extending in the second direction,
• the at least one light source comprising a first LED assembly having a plurality of first light emitting diodes provided on a substrate, which is supported by a first support plate, the first support plate having a first opening to receive the at least one post, the first LED assembly further comprising at least one peg extending in the first direction,
• the light guide panel having at least one slot to receive the at least one peg.

A backlight unit, comprising:

• a light guiding plate;
• a light source assembly;
• a reflector disposed below the light guiding plate to reflect light from the light source assembly towards the light guiding plate;
• a bottom cover disposed below the reflector and including:
• a first protrusion protruding therefrom and being in contact with a side surface of the light guiding plate to support the light guiding plate;
• and
• a second protrusion protruding therefrom to support the light source assembly, wherein a length of the first protrusion is greater than a length of the second protrusion,
• wherein the light source assembly includes:
• a plurality of light sources facing the side surface of the light guiding plate;
• a substrate on which the plurality of light sources are arranged;
• and
• a support, including:
• a vertical part on which the substrate is mounted, and
• a horizontal part perpendicularly bent at a lower end of the vertical part to be placed on the bottom cover, and having:
• a first hole in which the first protrusion inserted;
• and
• a second hole in which the second protrusion is inserted.