On Monday morning, the benchmark Nikkei index was up another 1% or more.

That took it to fresh 34-year highs.

Tech stocks around the world have been on a roll since Taiwan chip giant TSMC last week upgraded its outlook.

It cited booming demand for high-end silicon driven by AI products.

Japanese chip gear maker Advantest was among Monday's top gainers as a result, advancing 3%.

Traders are also optimistic the Bank of Japan will keep rates super low at its meeting this week.

Policymakers aren't expected to make any move until there are signs of sustained wage rises.

But it was a different picture on Chinese markets, with Hong Kong's Hang Seng index down 2%.

Some investors were disappointed that the country's central bank again skipped a rate cut on Monday.

Many are concerned that Beijing seems reluctant to do more stimulus measures, even as data shows the economic recovery struggling.

Later in the week the tech-led rally will be tested with earnings from a host of big U.S. names.

Intel and IBM are among the results due.

The week will also see new figures from Tesla and Netflix.