Patent ID: 8017980

Claim:
An illumination apparatus including a plurality of light emitting diode devices mounted therein, wherein the light emitting diode device includes a rectangular substrate having four edges, a light emission area having a light emitting layer and a clad layer formed by growing crystal on the substrate, an anode electrode and a cathode electrode, and the light emission area has at least three pairs of opposing corners in which each pair include a first corner of the light emission area and a second corner of the light emission area arranged substantially opposite to the first corner, two pairs of the at least three pairs of the light emission area being disposed symmetrically with respect to a line extending between a middle point of a first of two opposite edges of the substrate and through a center of the substrate, and one pair of the at least three pairs being disposed along a line extending between a middle point of a second of two opposite edges of the substrate and through the center of the substrate, and the light emission area does not exist at opposing corners of the substrate.