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Led Process-Oasistek Best Led Manufacturer

LED manufacturing can be divided into upstream epitaxy, midstream chip manufacturing, and downstream packaging, testing, and system assembly to create a wide variety of products. Each stage is further described below:

Upstream Epitaxy

Compounds made with arsenic (As), gallium (Ga), phosphorus (P) and other group III – V elements are used as the basis for crystal formation, and epitaxy methods are used to produced epi wafers. Epitaxy can be divided into liquid phase epitaxy (LPE), vapor phase epitaxy (VPE), and metal orgnic chemical vapor deposition (MOCVD).
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- Photonic Quasi Crystals
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Midstream Chip Manufacturing

Depending on the type of LED component to be manufactured, LED epi wafers are processing using diffusion, metal film evaporation, etching, and heat processing. Wafers are then ground and polished, and finally cut and cracked into single chips.

 

Downstream Packaging and Testing
After chips are affixed to lead frames, they undergoe bonding, curing, wire bonding, epoxy coating, baking, cutting, testing, and packaging to create a variety of LED components (for Lamp, SMD, Display etc.)
Ref. Wikipedia
  • DieLED chips created out of monocrystals via epitaxy.
  • Lead-frameor “support frame”; primarily supplies the component groups between the solder connections and wire terminals; separated into anode and cathode.
  • Die Attachmentplacing LED chips in the correct locations on silver paste coated circuit boards or lead frames.
  • Sintersilver paste is heated until the resin materials hardens, fixing the LED to the lead frame.
  • Wire Bondmetallic wires are used to link LED chip electrodes with lead frame terminals.
  • LED Packageresin is used to affix LED chips to solder wire.
  • Cuttingcutting machines are used to separate LED support frames from their connections.
  • TestingLED product performance and signals are tested.
Product Applications
Completed LED products are used in a myriad of product applications including traffic, automotive, electronics, home, commercial, and outdoor lighting.
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Traffic & Automotive Application
Electronics Products Applications
Home and Environmental Lighting
Outdoor and Commercial Lighting Applications
Traffic & Automotive Application Electronics Products Applications Home and Environmental Lighting Outdoor and Commercial Lighting Applications