Patent ID: 8405304

Claim:
A light emitting device, comprising: a first lead electrode and a second lead electrode disposed on a substrate and spaced apart from each other; a light emitting diode disposed on the first lead electrode, the light emitting diode being configured to emit light of a first wavelength; a transparent molding part enclosing the light emitting diode; a lower wavelength conversion material layer disposed on the transparent molding part and containing a phosphor to convert the light of the first wavelength emitted from the light emitting diode into light of a second wavelength longer than the first wavelength; an upper wavelength conversion material layer disposed on the lower wavelength conversion material layer and containing a phosphor to convert the light of the first wavelength emitted from the light emitting diode into light of a third wavelength longer than the first wavelength, the third wavelength being shorter than the second wavelength; a lower dielectric multilayer reflection mirror interposed between the transparent molding part and the lower wavelength conversion material layer; and an upper dielectric multilayer reflection mirror interposed between the lower wavelength conversion material layer and the upper wavelength conversion material layer, wherein each of the transparent molding part, the lower wavelength conversion material layer, the upper wavelength conversion material layer, lower dielectric layer reflection mirror, and upper dielectric multilayer reflection mirror comprises a flat upper surface substantially parallel to a top surface of the substrate, and the flat upper surface of the upper dielectric multilayer reflection mirror is wider than the flat upper surface of the lower dielectric multilayer reflection mirror wherein the upper and lower dielectric multilayer reflection mirrors have side surfaces extending from the upper surfaces thereof, and each of the side surfaces of the upper and lower dielectric multilayer reflection mirrors is formed to be at an angle to a side surface of the light emitting diode, wherein at least parts of the lower wavelength conversion material layer and the upper wavelength conversion material directly contact the first lead electrode and the second lead electrode, respectively, wherein light emitted from the lower wavelength conversion material layer has the first and second wavelengths, and wherein the lower dielectric multilayer reflection mirror and the upper dielectric multilayer reflection mirror each comprise at least one pair of low-refractivity and high-refractivity dielectric layers.