Abstract: A planar illumination device includes: a frame including a side wall; a circuit board including a mounted portion arranged on the side wall, and a folded portion folded with respect to the mounted portion; a plurality of point light sources arranged on the mounted portion; a light guiding plate that includes an incoming surface facing the plurality of point light sources and that is accommodated in the frame; and a fixing nail that is formed in the light guiding plate, protrudes from the incoming surface towards a part of the mounted portion where the plurality of point light sources are not arranged and arranges the mounted portion on the side wall.

Abstract: A planar illumination device according to an embodiment includes a light source, a circuit board and a pair of routing portions. The light source has a light emitting surface that emits light. The light source is mounted on the circuit board. A pair of land portions is provided on the circuit board, serves as a region where solder for electrically connecting respectively a pair of electrodes of the light source thereto is applied, is formed of an electrically conductive material, and corresponds to the electrodes. The pair of routing portions extends from each of the pair of land portions to at least a cover lay that protects a wiring on the circuit board and is formed of an electrically conductive material integrated with the land portions. First missing portions, being a region where the electrically conductive material is missing, are provided in each of the pair of routing portions.

Abstract: A planar illumination device includes: a frame including a side wall; a circuit board including a mounted portion arranged on the side wall, and a folded portion folded with respect to the mounted portion; a plurality of point light sources arranged on the mounted portion; a light guiding plate that includes an incoming surface facing the plurality of point light sources and that is accommodated in the frame; and a fixing nail that is formed in the light guiding plate, protrudes from the incoming surface towards a part of the mounted portion where the plurality of point light sources are not arranged and arranges the mounted portion on the side wall.