Method and apparatus for a light source

A flash system for use in a mobile device, comprising:

• a substrate having opposing first and second surfaces;
• a plurality of conductors being form on at least one of the first and second surfaces;
• an aperture extending through the substrate, from the first surface to the second surface of the substrate;
• a die attach pad extending over and covering the first surface of the substrate;
• a light source die attached on the die attach pad and disposed substantially within the aperture;
• an optical coupling layer encapsulating the light source die;
• and
• a wavelength converting layer comprising a low density layer and a high density layer disposed on the optical coupling layer such that the optical coupling layer is sandwiched between the wavelength converting layer and the die attach pad, wherein the high density layer has substantially higher density relative to the low density layer such that the low density layer is distinguishably visible under a microscope whereas the high density layer is visually visible precipitated particles on one side of the wavelength-converting material.

A lighting apparatus, comprising:

• a substrate having a opposing first and second surfaces;
• first and second apertures extending through the substrate from the first surface to the second surface of the substrate;
• first and second die attach pads adjacent to the first surface of the substrate and substantially covering the first and second apertures;
• a first light source die attached on the first die attach pad and disposed substantially within the first aperture for emitting light;
• a second light source die attached on the second die attach pad and disposed substantially within the second aperture for emitting light;
• a first optical coupling layer encapsulating the first light source die within the first aperture;
• a wavelength converting layer formed on the first optical coupling layer but being confined within the first aperture, the wavelength converting layer being configured to cover the first light source die so as to convert the light emitted from the first light source die into a broader spectrum light;
• and
• a second optical coupling layer encapsulating the second light source die, the wavelength converting layer that covers the first light source die and at least a portion of the second surface of the substrate such that the second optical coupling layer is configured to mix light emitted from the second light source die with the broader spectrum light from the wavelength converting layer.