Backlight unit and three-dimensional image display device having the same
First Claim
Patent Images
1. A backlight unit comprising:
- a light guide part comprising a plurality of light guide units,wherein each of the light guide units comprises;
a light guide plate comprising a light emission surface through which supplied light is emitted, a bottom surface which faces the light emission surface, and side surfaces which connect the light emission surface to the bottom surface;
a plurality of light sources which emit light toward at least one of the side surfaces; and
a band pass filter which is between the side surface to which the light is emitted and the light sources, and selectively transmits and reflects portions of the emitted light.
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Abstract
A three-dimensional (“3D”) image display device includes a backlight unit. The backlight unit includes a light guide part including a plurality of light guide units. Each of the light guide units includes a light guide plate including a light emission surface through which supplied light is emitted, a bottom surface which faces the light emission surface, and side surfaces which connect the light emission surface to the bottom surface, a plurality of light sources which emit light toward at least one of the side surfaces, and a band pass filter between the side surface to which the light is emitted and the light sources.
14 Citations
23 Claims
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1. A backlight unit comprising:
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a light guide part comprising a plurality of light guide units, wherein each of the light guide units comprises; a light guide plate comprising a light emission surface through which supplied light is emitted, a bottom surface which faces the light emission surface, and side surfaces which connect the light emission surface to the bottom surface; a plurality of light sources which emit light toward at least one of the side surfaces; and a band pass filter which is between the side surface to which the light is emitted and the light sources, and selectively transmits and reflects portions of the emitted light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A three-dimensional image display device comprising:
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a display panel which displays left eye and right eye images; and a backlight unit which supplies light to the display panel, wherein the backlight unit comprises a light guide part comprising a plurality of light guide units, wherein each of the light guide units comprises; a light guide plate comprising a light emission surface through which supplied light is emitted, a bottom surface which faces the light emission surface, and side surfaces which connect the light emission surface to the bottom surface; a plurality of light sources which emit light toward at least one of the side surfaces; and a band pass filter between the side surface to which the light is emitted and the light sources. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of displaying a three-dimensional image, the method comprising
emitting light to a band pass filter of a backlight unit of a three-dimensional image display device which displays left eye and right eye images; -
transmitting image light through the band pass filter; reflecting about 70% or more of non-image light by the band pass filter; and providing the transmitted image light to a display panel of the three-dimensional image display device to display the left eye and right eye images, wherein the backlight unit comprises; a plurality of light sources which emits the light, a light guide plate which receives the light and supplies the light to the display panel, and the band pass filter between a side surface of the light guide plate and the light sources.
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Specification