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US 10,254,585 B2Granted
Backlight unit and display device including the same
AssigneeLG Electronics Inc.
InventorsJongyoung Shin, Uihyung Lee, Eunseok Kim, Juyoung Joung
Life of this patent
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Abstract
A backlight unit and a display device including the backlight unit are disclosed. The backlight unit includes a frame including a bottom area and a side area extended from the bottom area, at least one substrate positioned at a front surface of the frame and mounting a plurality of light sources, a reflective sheet positioned at a front surface of the at least one substrate and including a strip area in at least a portion of the reflective sheet, and an optical sheet positioned at a front surface of the reflective sheet. A reflectance of the at least the portion of the reflective sheet is different from a reflectance of at least another portion of the reflective sheet.
Claims19
A backlight unit comprising:
- a frame having a recess on a front side and including a bottom area and a sidewall area that extends from the bottom area;
- a substrate positioned over the front side of the frame, a plurality of light sources being mounted on the substrate;
- a reflective sheet positioned over a front surface of the substrate, the reflective sheet including a first edge and a second edge connected to the first edge, and the reflective sheet being elongated along the first edge, the reflective sheet including:
- a first sheet area that contacts the bottom area of the frame;
- and
- a second sheet area that extends from the first sheet area and extending away from the bottom area;
- and
- an optical sheet positioned over a front side of the reflective sheet,
- wherein the first and second edges form a perimeter of the reflective sheet,
- wherein the reflective sheet includes:
- a first pattern formed on the second sheet area, the first pattern being positioned between the first edge and the first sheet area, and the first pattern including a plurality of strips elongated along the first edge;
- and
- a second pattern formed on the second sheet area, the second pattern being positioned between the second edge and the first sheet area, and the second pattern including a plurality of strips elongated along the second edge,
- wherein the plurality of strips of the first pattern includes:
- a first strip that is a continuous line;
- a second strip that is a continuous line and positioned between the first strip and the first edge, the second strip being shorter than the first strip;
- and
- a third strip that is a continuous line and positioned between the second strip and the first edge, the third strip being shorter than the second strip, and
- wherein the plurality of strips of the second pattern includes:
- a fourth strip that is a continuous line;
- a fifth strip that is a continuous line and positioned between the fourth strip and the second edge, the fifth strip being longer than the fourth strip;
- and
- a sixth strip that is a continuous line and positioned between the fifth strip and the second edge, the sixth strip being longer than the fifth strip.
20 more elements
A display device comprising:
- a frame having a recess on a front surface and including a bottom area and a sidewall area that extends from the bottom area;
- a substrate positioned over the frame and configured to accommodate a plurality of light sources;
- a reflective sheet positioned over a front side of the substrate, the reflective sheet including a first edge and a second edge connected to the first edge, and the reflective sheet being elongated along the first edge, the reflective sheet including:
- a first sheet area that contacts the bottom area of the frame;
- and
- a second sheet area that extends from the first sheet area and extending away from the bottom area;
- an optical sheet positioned over a front side of the reflective sheet;
- and
- a display panel positioned over a front side of the optical sheet,
- wherein the first and second edges form a perimeter of the reflective sheet,
- wherein the reflective sheet includes:
- a first pattern formed on the second sheet area, the first pattern being positioned between the first edge and the first sheet area, the first pattern including a plurality of strips elongated along the first edge;
- and
- a second pattern formed on the second sheet area, the second pattern being positioned between the second edge and the first sheet area, the second pattern including a plurality of strips elongated along the second edge,
- wherein the plurality of strips of the first pattern includes:
- a first strip that is a continuous line;
- a second strip that is a continuous line and positioned between the first strip and the first edge, the second strip being shorter than the first strip;
- and
- a third strip that is a continuous line and positioned between the second strip and the first edge, the third strip being shorter than the second strip, and
- wherein the plurality of strips of the second pattern includes:
- a fourth strip that is a continuous line;
- a fifth strip that is a continuous line and positioned between the fourth strip and the second edge, the fifth strip being longer than the fourth strip;
- and
- a sixth strip that is a continuous line and positioned between the fifth strip and the second edge, the sixth strip being longer than the fifth strip.
21 more elements
Dependencies are inferred from the claim text.