Patent ID: 7922352

Claim:
A semiconductor device for emitting output light, the device comprising: a mounting structure; a first light emitting diode die positioned over the mounting structure, the first light emitting diode die being configured to emit first light having a peak wavelength in the blue wavelength range; a second light emitting diode die positioned over the mounting structure, the second light emitting diode die being configured to emit second light having a peak wavelength in the red wavelength range; and a transparent encapsulant that encapsulates the first and second light emitting diode dies, the transparent encapsulant having first and second portions, the first portion of the transparent encapsulant including a wavelength-shifting region containing a photoluminescent material, the photoluminescent material having a property to convert at least some of the first light emitted by the first light emitting diode die into third light having a peak wavelength in the green wavelength range and longer than the peak wavelength of the first light, the second portion of the transparent encapsulant does not contain photoluminescent material, wherein the first light emitting diode die is situated in the first portion of the transparent encapsulant and the second light emitting diode die is situated in the second portion of the transparent encapsulant; wherein the first light, emitted by the first light emitting diode die, having a peak wavelength in the blue wavelength range; the second light, emitted by the second light emitting diode die, having a peak wavelength in the red wavelength range; and the third light, emitted by the first light emitting diode die and converted by the photoluminescent material into light having a peak wavelength in the green wavelength range are components of the output light emitted by the semiconductor device, and wherein the output light emitted from the semiconductor device having a high color-rendering index.