To provide an illumination device that reduces steep luminance variation in a boundary part between adjacent divided areas without increasing a load on a drive system, and to provide a display device using the same and electronic equipment.

Since each center of a lens 52b is provided so as to be deviated outward more than each light source 51b with respect to a central point 11 of an unit region 15, light distribution of each light source 51 is deviated to the outside of the unit region 15. Accordingly, the luminous flux by the entire light source unit 5b is widened outside of the unit region 15. The luminous flux by the entire widened light source unit 5b is superposed on the luminous flux by the entire light source unit 5b in the unit region 15 adjacent to the unit regions 15 involved in a backlight 2. As a result, the steep luminance variation in the boundary part between the unit region 15 and the unit regions 15 adjacent thereto can be reduced without increasing the load on the drive system.