Standard AlInGaP Chip
(Aluminum Indium Gallium Nitride)
P and N Electrodes are gold alloy material
These are typical chips used for Red, Orange, Yellow, Amber, and
Yellow-green LED Lamps
Standard InGaN Chip
(Indium Gallium Nitride)
These are typical chips to make Pure Green, Blue, and White LED
Lamps
HOW THEY WORK
LED die, or chips are manufactured in layers. The uppermost layer is known
as the P, or Positive layer. This layer has an overabundance of particles
carrying a positive charge.
The bottom layer is commonly called the N, or Negative layer. This layer
has mostly particles carrying a negative charge.
When current is applied to the "P" (positive) electrode, particles from
the positive layer are forced into the middle, or Active layer (also
called the P/N junction). Negatively charged particles from the negative
layer are drawn into the active layer at the same time.
When the positive and negative particles meet, photons, or particles of
light are formed.
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