Patent ID: 7656083

Claim:
A light emitting device comprising: at least one light emitting element; and a package including a plurality of recesses, each recess having a bottom surface for mounting said at least one said light emitting element and a side surface extending from said bottom surface; a backside electrode portion which is extending from a mounting portion; wherein a recess is located on the back surface of the package; at least one of said plurality of recesses has, in a vertical cross section of the recess along a minor axis, a first angle formed between a top surface and an inclined side edge of the recess which is different than a second angle formed between a top surface and an inclined side edge on another side of the recess and said at least one of said plurality of recesses has, in a vertical cross section of the recess along a major axis, a third angle formed between the top surface and an inclined side edge of the recess which is equal to a fourth angle formed between the top surface and an inclined side edge on an opposite side of the recess, the thickness of the backside electrode portion and a protrusion on the backside of the package are substantially the same size, wherein the first angle is greater than 90 degrees and smaller than 180 degrees, the second angle is equal or greater than 90 degrees and smaller than 180 degrees, and the first angle is greater than the second angle, and wherein two adjacent recesses are formed in said package, and when viewed along a cross section vertical to top edges of the two adjacent recesses, said two adjacent recesses are symmetrical about a vertical line passing through a midpoint relative to adjacent edges of the two adjacent recesses, each of the two adjacent recesses has a first diameter having a length which is twice a length of a second diameter of the two adjacent recesses.