Backlight unit and liquid crystal display device
AssigneeSharp Kabushiki Kaisha
InventorsHideyuki Chikazawa, Mitsuhiro Moriyasu
Life of this patent
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Abstract
To provide a backlight unit capable of improving color purity of a prescribed emission color as well as obtaining a uniform emission colors in the entire device, and a liquid crystal display device comprising thereof. Backlight unit B comprises: a LED 13 for compensating emission intensity of red wavelength light of a fluorescent tube 11, being arranged in between each of a plurality of said fluorescent tubes 11 arrayed in up and down directions, and a LED 13a for compensating emission intensity of red wavelength light of a fluorescent tube 11a, being arranged in the outside of each of two fluorescent tubes 11a arranged in the outermost of a plurality of said fluorescent tubes 11.
Claims21
A backlight unit comprising a first compensating light source for compensating emission intensity of a prescribed wavelength light of a fluorescent tube, being arranged in between each of a plurality of said fluorescent tubes arrayed in a prescribed direction, wherein said backlight unit further comprises a second compensating light source for compensating emission intensity different from the emission intensity of the first compensating light source of a prescribed wavelength light of said fluorescent tube, being arranged in the outside of each of two fluorescent tubes arranged in the outermost of said plurality of fluorescent tubes, and the intensity of the second compensating light source is smaller than that of the first compensating light source.
A backlight unit comprising a first compensating light source for compensating emission intensity of a prescribed wavelength light of a fluorescent tube, being arranged in between each of a plurality of said fluorescent tubes arrayed in a prescribed direction, wherein said backlight unit further comprises a second compensating light source for compensating emission intensity different from the emission intensity of the first compensating light source of a prescribed wavelength light of said fluorescent tube, being arranged in the outside of each of two fluorescent tubes arranged in the outermost of said plurality of fluorescent tubes, and wherein a direction of the second compensating light source is the same as the direction of the first compensating light source.
Dependencies are inferred from the claim text.