Backlight unit and liquid crystal display device comprising the same
AssigneeSamsung Electronics Co., Ltd.
InventorsCheol Hun Lee, Dong Lyoul Shin, Hyo Suck Chun, Yong Seok Kwak
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Abstract
A backlight unit capable of reducing or effectively preventing a hot spot phenomenon includes a plurality of light sources generating lights, a light guide plate including a portion on which the lights generated from the light sources are incident and converting the lights incident on the portion into a surface-shaped lights and a light path converter converting a traveling direction of the lights incident on the portion of the light guide plate in an area where the lights emitted from the light sources diodes overlap each other.
Claims20
A backlight unit, comprising:
- a plurality of light sources generating lights;
- a light guide plate comprising a light incident surface on which the lights generated from the light sources are incident, and converting line-shaped lights incident on the light incident surface into a surface-shaped light;
- and
- a light path converter recessed into a surface of the light guide plate and converting a traveling direction of the lights traveling in a portion of the light guide plate in an area where the lights emitted from the light sources overlap each other, the light path converter being disposed concentrated near the light incident surface of the light guide plate, wherein a portion of the light path converter adjacent to the light incident surface is disposed only between adjacent light sources.
A liquid crystal display device, comprising:
- a liquid crystal display panel displaying images;
- and
- a backlight unit supplying lights to the liquid crystal display panel;
- wherein the backlight unit comprises:
- a plurality of light sources generating the lights;
- a light guide plate comprising a light incident surface on which the lights generated from the light sources are incident and converting line-shaped lights incident on the incident surface into a surface-shaped light;
- and
- a light path converter recessed into a surface of the light guide plate and converting a traveling direction of the lights traveling a portion of the light guide plate in an area where the lights emitted from the light sources overlap each other, the light path converter being disposed concentrated near the light incident surface of the light guide plate, wherein a portion of the light path converter adjacent to the light incident surface does not overlap with light sources adjacent to the light path converter in a plane view.
Dependencies are inferred from the claim text.