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US 8,235,540 B2Granted
Backlight unit and display apparatus using the same
AssigneeLG Innotek Co., Ltd.
InventorsSung Yong Park, Se Jin Ko, Sung Ho Kim
Life of this patent
Estimating the term…
Abstract
A backlight unit and a display apparatus using the same are disclosed. The backlight unit includes a first reflector, a second reflector, and at least one light source disposed between the first reflector and the second reflector. The second reflector include at least two inclined surface adjacent to each other about at least one inflection point, the first and second inclined surfaces having different radii of curvature.
Claims19
A backlight unit comprising:
- a first reflector;
- a second reflector;
- and
- at least one light source disposed between the first reflector and the second reflector, wherein the light source includes a light emitting diode (LED),
- wherein the second reflector includes at least two inclined surfaces having at least one inflection point, and radii of curvature of the first and second inclined surfaces adjacent to each other about the inflection point are different from each other, and
- wherein a distance between a first vertical line extending from the inflection point and a second vertical line extending from a distal end point of the first inclined surface is less than or equal to a distance between the first vertical line extending from the inflection point and a third vertical line extending from a distal end point of the second inclined surface.
3 more elements
A backlight unit comprising:
- a first reflector;
- a second reflector;
- at least one light source disposed between the first reflector and the second reflector;
- and
- a cover plate to support the light source and come into contact with the first reflector and the second reflector, wherein the light source includes a light emitting diode (LED), and wherein the cover plate includes:
- a first segment having a first surface to which the first reflector is attached and a second surface opposite to the first surface, the second surface being provided with a plurality of first protrusions;
- a second segment extending from the first segment and having a second protrusion adjacent to the light source and a coupling recess formed at an opposite side of the second protrusion;
- and
- a third segment extending from the second segment and fixed to one side of the second reflector, the third segment having a third protrusion.
6 more elements
A display apparatus comprising:
- a display panel:
- and
- a backlight unit to project light to the display panel, wherein the backlight unit includes:
- a first reflector;
- a second reflector;
- and
- at least one light source disposed between the first reflector and the second reflector, wherein the light source includes a light emitting diode (LED), and wherein the second reflector includes at least two inclined surfaces having at least one inflection point, and radii of curvature of the first and second inclined surfaces adjacent to each other about the inflection point are different from each other.
4 more elements
Dependencies are inferred from the claim text.