Single-chip substrate for the manufacture
of LED, also known as the substrate, multi-use of sapphire, SiC, GaAs,
GaP for the material. In the single crystal epitaxial films grown on
single crystal multilayer films with different thickness, such as
AlGaAs, AlGaInP, GaInN and so on, used to achieve different colors, or
wavelengths of the LED.
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