Abstract: A light emitting diode (LED) and a method for manufacturing the same is disclosed. The disclosed LED comprises a first substrate, an epitaxy layer, and a plurality of bumps. The first substrate is doped with YAG: Ce and is for converting a first light with a first range of wavelength to a second light with a second range of wavelength. The epitaxy layer is disposed on the first substrate and is for emitting the first light. The plurality of bumps are disposed on the epitaxy layer. With the first substrate doped with YAG: Ce, the disclosed LED does not need additional phosphor to convert the first light with the first range of wavelength to the second light with the second range of wavelength.

Abstract: A light emitting diode (LED) and a method for manufacturing the same is disclosed. The disclosed LED comprises a first substrate, an epitaxy layer, and a plurality of bumps. The first substrate is doped with YAG: Ce and is for converting a first light with a first range of wavelength to a second light with a second range of wavelength. The epitaxy layer is disposed on the first substrate and is for emitting the first light. The plurality of bumps are disposed on the epitaxy layer. With the first substrate doped with YAG: Ce, the disclosed LED does not need additional phosphor to convert the first light with the first range of wavelength to the second light with the second range of wavelength.

Abstract: A diffuser and an optical system is provided in the present disclosure. The diffuser is configured to enhance the intensity of a light generated from a light source. The diffuser includes a transparent substrate, a transparent metalized layer, a bonding layer, and a plurality of light-penetrating microsphere balls. The transparent substrate has a first surface and a second surface. The transparent metalized layer is disposed on the first surface of the transparent substrate. The bonding layer is disposed on the transparent metalized layer. The plurality of light-penetrating microsphere balls are disposed on the bonding layer. The first surface is opposite to the second surface, and the light enters the diffuser from the second surface of the transparent substrate.

Abstract: A light-emitting structure is provided. The disclosed light-emitting structure may include a light-emitting diode (LED) die, a plurality of light-penetrating microspheres covered a light emitting surface of the LED die, and a light-penetrating structure, disposed over the LED die and the light-penetrating microspheres, for converting light emitting from the LED die. Another light-emitting structure is also provided. The disclosed light-emitting structure may include a light-emitting diode (LED) die, a plurality of light-penetrating microspheres covered a light emitting surface of the LED die, and a light-penetrating structure, disposed between the LED die and the light-penetrating microspheres, for converting light emitting from the LED die.