Investopedia: Cymer Still A Leading Light

Normally, large market share would sound like a golden ticket for shareholder returns. It's not so simple when it involves the semiconductor equipment industry, and Cymer (Nasdaq:CYMI) has proven to be just as cyclical as customers like ASML (Nasdaq:ASML) and other equipment companies like Applied Materials (Nasdaq:AMAT). With the photolithography industry on the cusp of both a rebound in demand and a major new technology cycle, investors may want to revisit this story.

The Big Dog in a Critical Step
Photolithography is an essential step in the manufacturer of semiconductors as the light source imprints the circuit pattern on the wafer. What's more, increasingly sophisticated light sources and photolithography machines have helped make Moore's Law a reality and enabled increasingly complex chips.

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http://stocks.investopedia.com/stock-analysis/2012/Cymer-Still-A-Leading-Light-CYMI-AMAT-ASML-INTC0330.aspx