Patent ID: 8362493

Claim:
A semiconductor light emitting device comprising: a base portion having a concave portion formed in one of major surfaces thereof; and a light emitting element mounted on a bottom surface of the concave portion of the base portion, wherein the base portion comprises: one pair of first side surfaces located opposite to each other; and one pair of second side surfaces, wherein the second side surfaces are formed between one pair of the first side surfaces, and the lengths of which are shorter than the first side surfaces, wherein one pair of the first side surfaces and one pair of the second side surfaces define a side wall portion, which extends from the base portion, and which laterally surrounds the light emitting element, wherein the concave portion reaches the second side surfaces, wherein the light emitting element is covered with a resin portion filled in the concave portion, and a space defined by the side wall portion, wherein an upper surface of the resin portion exposed to an outside from the space defined by the side wall portion forms a concave shape such that at least a part of the upper surface of the resin portion is positioned closer to the bottom surface of the concave portion than an upper surface of the side wall portion, wherein the base portion has a substantially rectangular shape, wherein the light emitting device comprises a blue light emitting diode, and wherein the resin portion contains phosphor in order to convert wavelengths of light emitted from the light emitting device so that the light emitted from the light emitting device is mixed with the light whose wavelengths have been converted by the phosphor and the mixed light is emitted through the resin portion.