To provide a highly efficient plane light source device, and an LCD backlight unit having the same plane light source device.
In the plane light source device having a light-emitting element matrix wherein a plurality of light-emitting elements are arranged in rows and columns on a substrate, the light-emitting element matrix includes a first matrix wherein a plurality of light-emitting elements are arranged in rows and columns, and a second matrix wherein a plurality of light-emitting elements are arranged in rows and columns on the inside of a four-sided shape made by four light-emitting elements mutually neighbored in the first matrix so as to locate by making respective angles made by respective light-emitting elements and four light-emitting elements satisfy a condition of 4555 as a standard for an axis in the row direction. Further, a distance P1 to the other light-emitting element located in the diagonal direction among distances from the light-emitting elements included in the light-emitting element matrix to the other adjacent light-emitting elements satisfies a condition of 25 mmP129 mm, and a distance P2 to the other light-emitting element located in the row direction satisfies a condition of 34 mmP238 mm.
KAN KENCHU
KIM HYUNG SEOK
JEONG YOUNG JUNE
PARK YOUNG SAM
YOO CHUL HEE
| JP2007042511A | 2007-02-15 | |||
| JP2007073295A | 2007-03-22 | |||
| JP2003187605A | 2003-07-04 | |||
| JP2007073290A | 2007-03-22 |