An illuminating device in which one or more chamfer surfaces are formed at one
or more corner portions, respectively, of a light guiding part, and a luminous
body is disposed corresponding to a chamfer surface, and a display apparatus using
the illuminating device are disclosed. The illuminating device has the light guiding
part for guiding light to a display unit of the display apparatus and a light source
part. The light guiding part includes an incident surface on which the light is
incident, a back surface opposite to the incident surface, an emitting surface
from which the light is emitted to the display unit, side surfaces perpendicular
to the incident surface and the emitting surface, and chamfer surfaces formed at
corner portions, respectively, each connected to the incident surface and one of
the side surfaces. The light source part includes marginal luminous bodies each
corresponding to each of the chamfer surfaces. The light source part may further
have at least one central luminous body that corresponds to the incident surface.
