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Semitree

Learn semiconductors

Four structured paths from first principles to advanced packaging. Each lesson links to the next, so you always know where to go.

  1. 113 lessons

    Semiconductor Fundamentals

    From what a semiconductor is up to the CMOS integrated circuit.

    Start path →
    1. 1.What is a semiconductor?
    2. 2.Conductors vs semiconductors
    3. 3.Energy bands
    4. 4.Bandgap
    5. 5.Intrinsic semiconductor
    6. 6.Doping
    7. 7.n-type semiconductor
    8. 8.p-type semiconductor
    9. 9.PN junction
    10. 10.Diode
    11. 11.MOSFET
    12. 12.CMOS
    13. 13.Integrated circuit
  2. 216 lessons

    Chip Manufacturing

    The journey from sand to a packaged, tested chip.

    Start path →
    1. 1.Silicon
    2. 2.Ingot
    3. 3.Wafer
    4. 4.Oxidation
    5. 5.Deposition
    6. 6.Photoresist
    7. 7.Photolithography
    8. 8.Etching and Deposition
    9. 9.Doping
    10. 10.CMP
    11. 11.Metallization
    12. 12.Metrology & inspection
    13. 13.Wafer test
    14. 14.Dicing
    15. 15.Chip Packaging
    16. 16.Final test
  3. 39 lessons

    IC Design Flow

    How an idea becomes a manufacturable chip, step by step.

    Start path →
    1. 1.Architecture
    2. 2.RTL
    3. 3.Logic
    4. 4.Synthesis
    5. 5.Verification
    6. 6.Place & route
    7. 7.Physical design
    8. 8.Signoff
    9. 9.Tapeout
  4. 414 lessons

    Packaging

    From what packaging is and why it's needed, through wire-bond and flip-chip, up to chiplets, 3D stacks, and HBM.

    Start path →
    1. 1.What is semiconductor packaging?
    2. 2.Why does a chip need packaging?
    3. 3.Die vs package
    4. 4.Package substrate
    5. 5.Electrical connections
    6. 6.Wire bonding
    7. 7.Flip chip
    8. 8.Traditional packaging
    9. 9.Wafer-level packaging
    10. 10.2.5D integration
    11. 11.3D IC
    12. 12.Chiplets
    13. 13.HBM
    14. 14.Advanced packaging