| 摘要 |
The backlight device includes: a light guide plate having a rectangular shape; LEDs arranged on end surfaces of side surface portions formed of long and short sides of the light guide plate; and LED board having a long and thin shape and on which the LEDs are mounted, wherein a plurality of LED boards of a same type are arranged on the long and short sides of the light guide plate, and the plurality of LED boards are continuously arranged corresponding to the entire area of the end surface of each side of the light guide plate, and at the same time, the LED boards of any one of long and short sides are not arranged but a predetermined interval is formed at an edge portion constituting a point of contact between the long and short sides of the light guide plate. |
