Direct light type backlight unit and liquid crystal display
First Claim
1. A direct light type backlight unit comprising:
- a plurality of light emitting devices slanted at a predetermined angle on a substrate; and
a grating which diffracts incident light from the light emitting devices at different diffraction angles to separate the incident light into a plurality of colored light beams.
1 Assignment
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Accused Products
Abstract
A direct light type backlight unit and a liquid crystal panel employing the same. The backlight unit includes a plurality of light emitting devices disposed at a predetermined angle on a substrate; and a grating which diffracts incident light from the light emitting devices at different diffraction angles to separate the incident light into a plurality of colored light beams. The backlight unit and the liquid crystal display include direct light type light sources emitting light at an optimal angle to provide maximum diffraction efficiency of the grating, which allows color image realization without the use of a color filter.
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Citations
10 Claims
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1. A direct light type backlight unit comprising:
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a plurality of light emitting devices slanted at a predetermined angle on a substrate; and
a grating which diffracts incident light from the light emitting devices at different diffraction angles to separate the incident light into a plurality of colored light beams. - View Dependent Claims (2, 3, 4)
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5. A liquid crystal display device which realizes a color image without using a color filter, the liquid crystal display comprising:
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a liquid crystal panel which forms a color image; and
a direct type backlight unit that is disposed on a lower portion of the liquid crystal panel, comprising;
a plurality of light emitting devices slanted at a predetermined angle on a substrate; and
a grating which diffracts incident light from the light emitting devices at different diffraction angles to separate the incident light into a plurality of colored light beams. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification