| 摘要 |
Thinning of a planar illumination device using an LED is accelerated while higher and more uniform brightness is promoted. An LED 24 constituting the planar illumination device has no lamp house, but a translucent resin that seals an LED chip 25 is exposed. An outline of the translucent resin is formed as a projecting portion 28 comprising a continuous curved surface. Moreover, on a side end face 12 a opposed to the LED 24 of a light guide plate 12 , a notch portion 12 d following the outline of the projecting portion 28 is formed, and on this notch portion 12 d, a prism row 101 made of a plurality of unit prisms extending in a direction crossing the light guide plate 12 is formed.
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