Patent ID: 9443832
Filing Date: 2016-09-13
CPC Classification: H01L

Claim Text:
1. A light emitting device comprising: a substrate; a first light emitter and a second light emitter mounted above the substrate; a seal containing a wavelength conversion material, the seal collectively sealing the first light emitter and the second light emitter linearly along an alignment direction thereof, an outer shape of the seal being cylindrical, and a cross section of the seal being semi-circular when taken along a plane perpendicular to a longitudinal direction thereof; and a rectangular heat transfer pattern on the substrate, wherein a rate of decrease in light output with respect to a temperature increase is greater for the second light emitter than for the first light emitter, the second light emitter is mounted above the substrate via the heat transfer pattern, the first light emitter is mounted above the substrate without the heat transfer pattern, and a portion of the heat transfer pattern extends beyond a periphery of the seal, exposing the portion of the heat transfer pattern.