They make much of the gear that goes into giant data centers. Demand for their products is shifting the balance of tech power.

What’s a “silicon-collar”? South Korea’s chip industry has been supercharged by the advent of the A.I. age, inspiring a host of new phrases.

Stocks in South Korea and Taiwan, the center of global chip making, plunged on fears about energy prices. Their recovery shows the bullishness over artificial intelligence.