BACKLIGHT UNIT

摘要

PROBLEM TO BE SOLVED: To provide a backlight unit which can save cost and can make a backlight thinner and smaller.SOLUTION: A substrate 318 which is equipped with multiple light emitting diodes 316 has a shape that a width of a common first direction Dis longer than a width of a second direction orthogonal to the first direction. The multiple light emitting diodes 316 include light emitting diodes of a first group 316a arranged in single row in the first direction D, and light emitting diodes of a second group 316b arranged in zigzag in the first direction D. The light emitting diodes of the second group 316b are arranged in the center of the base plate in the first direction D. The light emitting diodes of the first group 316a are arranged to sandwich the center of the substrate 318 in the first direction D.