To obtain an LED back light unit to carry out uniform illumination with no unevenness of brightness.
In the LED backlight unit provided with a light guide plate to homogenize and emit incident light from light incident faces installed at two opposing edges, and a first and a second light sources to make incidence of light onto the light incidence faces of this light guide plate, the first light source has a plurality of LED elements arranged along the longitudinal direction of one of the two opposing edges, and the second light source has a plurality of LED elements arranged along the longitudinal direction of another edge, and arranged so that an optical axis inside the light guide plate will not be overlapped with the optical axis of the incident light from the first light source.
Jun Tsuruta
Shigeru Tsuchiya
Masaya Nishiyama
Higuchi Souji
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