Layout Knowledge Base

Disclaimer

Limits of these notes — educational, best-effort, not factory authority.

The Layout Knowledge Base on klayout.com is provided for education and general orientation. It is curated in good faith.

Not professional advice

Nothing on this site is legal, financial, medical, or professional engineering advice for a specific tapeout, board spin, or product. Design rules, process layers, and tool behavior change by foundry, node, and software version.

Not a substitute for primary documents

Do not treat these notes as a replacement for:

  • A foundry or fab process design kit (PDK)
  • Official design-rule documents
  • Vendor software manuals
  • Contractual manufacturing specifications

If a note and a primary document disagree, the primary document wins.

Accuracy

Notes are human-edited; drafting tools were used on some pages and can still leave errors. Figures illustrate ideas; they are not certified process masks. Report problems to hello@klayout.com.

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